feature: the web service shows and changes the settings of the metrics service at /metrics/settings, and OpenVPN starts on a new router, as setup installs CRLs that revoke nothing.

fix: OpenVPN starts on a new router, as setup installs CRLs that revoke nothing.
fix: vpn-router-setup runs on a new installation once libpq can be found.
2026-10-28 22:31:27 +01:00 · 2026-10-28 22:00:37 +01:00 · 2026-10-28 21:41:52 +01:00 · 2026-10-27 08:46:36 +01:00 · 2026-10-26 21:26:47 +01:00 · 2026-10-26 20:58:33 +01:00
28 changed files with 956 additions and 250 deletions
@@ -46,7 +46,7 @@ and as a Tailwind CSS page for a browser, and `/status` is the same status as JS
 much as `web.status_content` says, since the router is reachable from the internet and the
 operator decides how much it tells strangers: `basic`, the default because it tells the least,
 the overall status and the Client IP, `standard` also the package versions and the number of
-active and other services, and `full` also each service and the state of the site-to-site, road-warrior, OpenVPN and
+active and other services, and `full` also each service and the state of the site-to-site, IKEv2, OpenVPN and
 WireGuard features. The Client IP is the address the request came from, through the trusted
 proxies, so a person can see the address the router sees. Nothing comes from the configuration.
 `/status` names its content, so clients such as manage-ui and the Router Manager show what it
@@ -394,8 +394,8 @@ failure, then listens. `vpnrouter_auth` turns every failure of the database into
 psycopg (Ubuntu ships only its pure-Python implementation) finds libpq through the dynamic linker
 cache, which dpkg refreshes with its deferred `ldconfig` only at the end of an installation, so a
 service started during the installation cannot import it yet; a failed import cannot be repeated
-in the same process either, as psycopg caches the lookup. The services therefore import psycopg
-plainly, and their units wait instead: `ExecStartPre=wait-for-libpq`, a shell script of each
+in the same process either, as psycopg caches the lookup. The services and `vpn-router-setup`
+therefore import psycopg plainly, and their units wait instead: `ExecStartPre=wait-for-libpq`, a shell script of each
 package, waits until `ldconfig -p` lists `libpq.so.5`, within `TimeoutStartSec=5min`. The
 maintainer scripts start the units with `systemctl --no-block` (debhelper's start is turned off),
 because a start that waited would hold dpkg before its `ldconfig`.
@@ -458,7 +458,7 @@ refresh tokens after the operations of `vpnrouter_auth.REVOKING`.

 Consequences: A Manager-only account cannot become a VPN user, as LDAP cannot change an entry's
 structural class and its password hash cannot be copied; it is removed and added again instead.
-It has no certificate, so OpenVPN and road-warrior access refuse it. The administrator's password
+It has no certificate, so OpenVPN and IKEv2 access refuse it. The administrator's password
 is on disk only until setup has run.

 ## ADR-19: The package has an LDAP schema of its own under a UUID OID
@@ -655,8 +655,8 @@ one, so its name is the one the tunnel always had.
 - **Local settings per connection:** each connection has its own `local_cidrs` and
  `local_id_mode`, as each peer expects its own traffic selectors and identity. `wan.local_fqdn`
  stays the router's one name, used by the `fqdn` mode, resolved once for the `public_ip` mode,
-  and used by HTTPS, road-warrior and OpenVPN. `local.cidrs` stays the subnets the router
-  routes, masquerades and offers to road-warrior and OpenVPN clients.
+  and used by HTTPS, IKEv2 and OpenVPN. `local.cidrs` stays the subnets the router
+  routes, masquerades and offers to IKEv2 and OpenVPN clients.
 - **One file:** `vpn-router-setup` writes every connection that is ready to
  `/etc/swanctl/conf.d/site-to-site.conf`, with the proposals and timers the one tunnel had, and
  removes the file when none is. The NAT exemptions pair each connection's `local_cidrs` with its
@@ -766,9 +766,9 @@ signs the requester's CSR, or makes the key and returns it once in a PKCS#12 fil
 the certificate, so a key it gave away cannot leak from it later. The PKCS#12 file uses 3DES and
 SHA-1 MACs, the encryption the key stores of Windows and macOS import. strongSwan reads only the
 first certificate of a PEM file, so each CA has a file of its own in `/etc/swanctl/x509ca`;
-road-warrior and site-to-site name their CA in `cacerts`, which restricts the trust chain to it.
+IKEv2 access and site-to-site name their CA in `cacerts`, which restricts the trust chain to it.

-Consequences: The P2S CA's certificates are accepted by road-warrior and OpenVPN only, the site-to-site CA's by
+Consequences: The P2S CA's certificates are accepted by IKEv2 and OpenVPN only, the site-to-site CA's by
 site-to-site only. With an offline root, new issuing CAs and the root CRL need the offline step,
 and a router whose P2S CA waits has no VPN server certificate and so no P2S access. The router
 keeps the users' keys, as the OpenVPN profile embeds them.
@@ -1141,20 +1141,92 @@ later. S3 and Azure Blob clients are not served.

 Status: Accepted

-Context: Sites get subdomains of a selected domain, delegated to the router, without a registrar
-change per site. Ubuntu has BIND, Knot and PowerDNS; only PowerDNS's gpgsql backend reads records
+Context: The router hosts authoritative domains as their primary, with optional secondary name
+servers, and a domain can give the sites their records without a registrar change per site. Ubuntu
+has BIND, Knot and PowerDNS; only PowerDNS's gpgsql backend reads records
 from PostgreSQL, so changes are rows, without zone files or reloads. systemd-resolved's stub holds
-127.0.0.53, and its stub on the external addresses answers the remote access clients while P2S or
-OpenVPN is enabled.
+127.0.0.53 and 127.0.0.54, and the remote access clients' resolver answered on the external
+addresses, the addresses an authoritative server needs. The clients reach the internal address
+just as well, through the tunnel when it is in `local.cidrs` (ADR-43).

 Decision: While `dns.enabled` is true, setup runs `pdns.service` with
 `/etc/powerdns/pdns.d/vpn-router.conf`, written before the packages are installed, on the
 addresses of `dns.listen`, with the gpgsql backend on the database `vpn-router-dns` and PowerDNS's
-own schema. It writes one zone, `dns.zone`, through the procedure `dns_apply` of
-`/usr/share/vpn-router/sql/dns.sql`: SOA, NS, A and AAAA records of `dns.addresses` for the apex,
-the name server and every site host name in the zone, and manual records administrators add; the
-serial grows only when the records change. `dns.listen` on the external interface is refused while
-P2S or OpenVPN is enabled.
+own schema, and `primary=yes`. The domains, their secondaries and manual records are rows of the
+router's tables in that database, like the sites in `vpn-router-sites`, not settings of
+`vpn-router.json`: they are many and change through the web service. `dns.nameserver` and
+`dns.addresses` stay settings, the router's one identity as the primary NS of every domain. Setup
+writes each domain as a MASTER zone through the procedure `dns_apply` of
+`/usr/share/vpn-router/sql/dns.sql`: SOA, NS of the router and the secondaries, A and AAAA records
+of `dns.addresses` for the apex, the name server and, with the domain's site records switch, every
+site host name whose closest domain it is, and the manual records; the serial grows only when the
+records change, which makes PowerDNS notify. A secondary is a name, its NS, and an address, which
+goes to the domain's `ALSO-NOTIFY` and `ALLOW-AXFR-FROM` metadata, so the global
+`allow-axfr-ips` stays the loopback default. A host name belongs to its closest domain only, and a
+domain inside another is delegated from it with NS records, so a name is never answered by two
+zones. The remote access clients' resolver answers on the addresses of the setting
+`p2s.dns_listen`, by default the internal one; a `dns.listen` that shares an interface with it is
+refused while P2S or OpenVPN is enabled.

-Consequences: The zone follows the sites at each setup run. One zone only, without DNSSEC or
-transfers; the delegation is made at the parent zone by hand.
+Consequences: The domains follow the sites at each setup run. Transfers are authorized by address,
+without TSIG, and there is no DNSSEC; the delegation of each domain is made at its parent zone by
+hand.
+
+## ADR-43: The remote access clients' resolver is dnsmasq, not systemd-resolved
+
+Status: Accepted
+
+Context: IKEv2 and OpenVPN clients were given the router as their DNS server, answered by
+systemd-resolved through a `DNSStubListenerExtra` drop-in. resolved synthesizes records for the
+machine's own host name, all its addresses, the Docker bridge and the tunnel addresses included,
+and for `_gateway` and `localhost`, on every stub, and systemd 255 has no setting that turns this
+off. Its extra stub also took port 53 of the addresses PowerDNS needs. dnsmasq-base is in main,
+a single binary without a service of its own, and forwards to one upstream server.
+
+Decision: `vpn-router-resolver.service` runs dnsmasq, bound to the addresses of `p2s.dns_listen`
+only (`bind-interfaces`), forwarding to resolved's stub on 127.0.0.53, without `/etc/hosts` and
+without forwarding names that have no dot (`domain-needed`). resolved keeps its loopback stubs
+only and stays the router's own resolver, with the upstream servers of the platform. Setup writes
+`/etc/vpn-router/dnsmasq.conf` while IKEv2, OpenVPN or WireGuard runs, opens port 53 there for
+their client networks, and removes the earlier drop-in.
+
+Consequences: Clients resolve the names resolved resolves, Azure's internal names included, but
+not the router's synthesized ones. The package depends on dnsmasq-base. PowerDNS and the clients'
+resolver share no address.
+
+## ADR-44: Apple VPN profiles are unsigned IKEv2 profiles with a PKCS#12 encrypted by a password given per download
+
+Status: Accepted
+
+Context: macOS, iOS and iPadOS connect to the IKEv2 access with their built-in IKEv2 client,
+configured by a configuration profile. The router keeps each user's certificate and key. Apple's
+clients read a PKCS#12 only when it is encrypted with 3DES and SHA-1, send one proposal per SA,
+and show an unsigned profile as unverified.
+
+Decision: The web service builds the profile with `plistlib` and python3-cryptography: the P2S CA
+and the root, the user's PKCS#12 encrypted with a password the caller gives with each request,
+and an IKEv2 payload matching `road-warrior.conf` (EAP-TLS with the certificate, AES-256,
+SHA2-256, group 14). The profile is not signed. Admins get any user's profile through `/users`,
+users their own through `/account` with their current password and code.
+
+Consequences: The password is never stored; the device asks for it when the profile is installed.
+A profile shows as unverified. A changed proposal of `road-warrior.conf` must be changed in the
+profile too. WireGuard is not part of it.
+
+## ADR-45: IKEv2 clients get split DNS domains, p2s.dns_domains
+
+Status: Accepted
+
+Context: The IKEv2 access is a split tunnel. macOS and iOS use the DNS server an IKEv2 VPN
+pushes only for queries scoped to the tunnel, so names only the router resolves, such as Azure's
+internal names, fail. RFC 8598 defines INTERNAL_DNS_DOMAIN (attribute 25): the client resolves the
+listed domains and their subdomains with the VPN's servers. strongSwan's pools take numeric
+attributes with string values; Apple profiles name such domains in `SupplementalMatchDomains`.
+
+Decision: The setting `p2s.dns_domains` lists the domains; setup pushes each as attribute 25 of the
+IKEv2 address pool, and the Apple VPN profile gives them as match domains of the router's resolver,
+the addresses setup records for the web service.
+
+Consequences: Clients resolve the listed domains through the tunnel and everything else with their
+own resolvers. Clients that ignore attribute 25 keep the scoped behaviour; the Apple profile
+covers Apple devices. A changed list reaches an Apple device with a newly installed profile.
@@ -3,11 +3,11 @@
 A Debian package that configures a Linux host or virtual machine as a VPN router:

 - site-to-site IKEv2 IPSec with pre-shared key or certificate authentication (strongSwan swanctl)
- road-warrior (P2S) access using IKEv2 EAP-TLS
+- IKEv2 access using EAP-TLS
 - a two-level certificate authority: a root, which may be kept offline, and issuing CAs for the VPN
  clients, for site-to-site and for general use, with certificate templates, published certificates
  and CRLs, and an optional ACME server
- OpenVPN (P2S) access with a certificate and a password per user, the users kept in a local
+- OpenVPN access with a certificate and a password per user, the users kept in a local
  LDAP directory and managed with `vpn-router-user` or the web service
 - optional WireGuard endpoint
 - routing and NAT for a protected subnet, TCP MSS clamping, and UFW firewall rules
@@ -15,7 +15,7 @@ A Debian package that configures a Linux host or virtual machine as a VPN router
 - metrics of the router kept in PostgreSQL, served for an OpenTelemetry Collector and pushed
  over OTLP
 - static web sites served by Caddy, uploaded through the web service or WebDAV, and an optional
-  authoritative name server (PowerDNS) for a zone of the sites
+  primary name server (PowerDNS) of the router's domains, with secondaries and records for the sites

 Nothing in the package is specific to a cloud provider. It is built on the external and
 internal NIC names, and a `mode` setting says how much of the rest you are supplying and
@@ -108,13 +108,15 @@ must have the type shown below; an unknown section or setting is an error.
 | `general` | `mode` | string | `manual` | How much you supply: `manual`, `interfaces` or `auto` |
 | `interfaces` | `external` | string | | Name of the NIC facing the untrusted network |
 | `interfaces` | `internal` | string | | Name of the NIC facing the protected network |
-| `wan` | `local_fqdn` | string | | This router's name or IP address: its IKE identity in `fqdn` mode, the name resolved in `public_ip` mode, and the name of HTTPS, road-warrior and OpenVPN |
-| `local` | `cidrs` | list | | Local subnets routed via the internal side, masqueraded to the external one, and offered to road-warrior and OpenVPN clients |
+| `wan` | `local_fqdn` | string | | This router's name or IP address: its IKE identity in `fqdn` mode, the name resolved in `public_ip` mode, and the name of HTTPS, IKEv2 and OpenVPN |
+| `local` | `cidrs` | list | | Local subnets routed via the internal side, masqueraded to the external one, and offered to IKEv2 and OpenVPN clients |
 | `local` | `int_addr` | string | | This host's address on the internal network |
 | `local` | `int_gateway_ip` | string | | Next hop on the internal side |
 | `site_to_site` | | object | | The site-to-site connections, each a name and an object of the settings below |
-| `p2s` | `enabled` | boolean | `false` | Road-warrior access |
-| `p2s` | `address_pool` | string | | CIDR assigned to road-warrior clients |
+| `p2s` | `enabled` | boolean | `false` | IKEv2 access |
+| `p2s` | `address_pool` | string | | CIDR assigned to IKEv2 clients |
+| `p2s` | `dns_domains` | list | | The domains IKEv2 clients resolve with the router's resolver (INTERNAL_DNS_DOMAIN, RFC 8598, and the match domains of the Apple VPN profile), at most 16 |
+| `p2s` | `dns_listen` | string | `internal` | The addresses of the resolver the IKEv2, OpenVPN and WireGuard clients are given: `internal`, `external` or `both` |
 | `wireguard` | `enabled` | boolean | `false` | WireGuard endpoint |
 | `wireguard` | `address` | string | | The router's own address on `wg0` with the prefix of the peers' network, for example `192.168.200.1/24`; the network and the broadcast address of a network larger than /31 are refused |
 | `wireguard` | `listen_port` | integer | `51820` | UDP port |
@@ -145,10 +147,9 @@ must have the type shown below; an unknown section or setting is an error.
 | `sites` | `upload_max_mb` | integer | `512` | The largest upload of a site's file or zip archive, in MiB, 1 to 10240 |
 | `sites` | `webdav` | boolean | `false` | WebDAV of the sites' folders, which needs `https.enabled` and `wan.local_fqdn` (see WebDAV) |
 | `sites` | `webdav_port` | integer | `7445` | HTTPS port of WebDAV |
-| `dns` | `enabled` | boolean | `false` | The name server of `dns.zone`, which needs `dns.zone`, `dns.nameserver` and `dns.addresses` (see Name server) |
-| `dns` | `zone` | string | | The zone the name server answers for |
-| `dns` | `nameserver` | string | | The name server's host name |
-| `dns` | `addresses` | list | | The public addresses of the zone's apex, the name server and the sites' host names |
+| `dns` | `enabled` | boolean | `false` | The primary name server of the router's domains, which needs `dns.nameserver` and `dns.addresses` (see Name server) |
+| `dns` | `nameserver` | string | | The name server's host name, the primary NS of every domain |
+| `dns` | `addresses` | list | | The public addresses of the name server, the domains' apexes and the sites' host names |
 | `dns` | `listen` | string | `external` | The interfaces the name server answers on: `internal`, `external` or `both` |
 | `dns` | `ttl` | integer | `300` | TTL of the records, 60 to 86400 seconds |
 | `pki` | `root_name` | string | `VPN Router Root CA` | Common name of the root CA, when the router creates it |
@@ -250,9 +251,9 @@ A minimal site-to-site configuration in `auto` mode:
 The router's IKE identity (`wan.local_fqdn` in `fqdn` mode) and the remote one (`id`) are
 an FQDN or an IPv4 or IPv6 address. They are written to the strongSwan configuration as given;
 strongSwan reads an address as an IP identity and a name as an FQDN, so a leading `@` is not needed
-and is refused. Road-warrior and OpenVPN access need a name in `wan.local_fqdn`.
+and is refused. IKEv2 and OpenVPN access need a name in `wan.local_fqdn`.

-WireGuard peers are P2S users' devices: a VPN user of the router's directory may have up to 16
+WireGuard peers are VPN users' devices: a VPN user of the router's directory may have up to 16
 peers, each with its public key and its IPs, IPv4 addresses or networks, kept in the user's
 entry (`vpnRouterWireGuardPeer`) and set with `PUT /users/<name>` (`wireguard_peers`) or on the
 WireGuard tab of the Router Manager's Remote access management. A key is used by one peer only,
@@ -397,11 +398,11 @@ systemctl restart vpn-router-setup
 The service also runs at boot. With platform `none` it does nothing and says so.
 Otherwise it regenerates the configuration files, resolves the interfaces and their
 addresses as `mode` directs, applies routes, generates WireGuard keys and injects
-firewall rules. It provisions the user directory in `slapd` while OpenVPN or road-warrior
+firewall rules. It provisions the user directory in `slapd` while OpenVPN or IKEv2
 access is configured. It then starts `strongswan`, `wg-quick@wg0` and
 `openvpn-server@vpn-router` if the corresponding feature is configured, reloading or
 restarting them only when their inputs changed, and
-restarts `systemd-resolved` only when the road-warrior DNS drop-in changed. Turning a
+restarts the remote access clients' resolver only when its configuration changed. Turning a
 feature off in the configuration stops its service and removes its files. Every step is
 idempotent, so restarting with no changes does nothing.

@@ -448,7 +449,7 @@ The root signs the issuing CAs only (path length 1), and the issuing CAs sign th
 (path length 0):

 - `p2s`, named `pki.p2s_name`, signs the router's VPN server certificate, which IKEv2 and OpenVPN
-  present, and the users' certificates. Road-warrior and OpenVPN accept client certificates of
+  present, and the users' certificates. IKEv2 and OpenVPN accept client certificates of
  this CA only.
 - `s2s`, named `pki.s2s_name`, signs the router's site-to-site certificate and the certificates
  of its peers.
@@ -634,8 +635,8 @@ certificate and key from `/etc/caddy/vpn-router-pki/<name>/`, readable by its gr
 With `openvpn.enabled`, an `address_pool` and `wan.local_fqdn` set, `vpn-router-setup` runs
 `openvpn-server@vpn-router` with `/etc/openvpn/server/vpn-router.conf`. The server uses the
 router's VPN server certificate, the root and the P2S CA and their CRLs (see Certificates),
-pushes routes to `local.cidrs` and the router as DNS server, and opens `openvpn.port` on the
-external interface.
+pushes routes to `local.cidrs` and the router's addresses of `p2s.dns_listen` as DNS servers, and
+opens `openvpn.port` on the external interface.

 A client needs both a certificate of the P2S CA and the password of the user the
 certificate names:
@@ -651,7 +652,7 @@ certificate names:
 ### The user directory

 Once a platform is chosen, `vpn-router-setup` keeps a directory of users in the local slapd,
-whether or not OpenVPN or road-warrior access is enabled, so users can be managed before either
+whether or not OpenVPN or IKEv2 access is enabled, so users can be managed before either
 is switched on:

 - its own database, `dc=vpn-router,dc=local` in `/var/lib/ldap/vpn-router`, next to the one the
@@ -772,9 +773,29 @@ When the Router Manager is installed with an administrator (its debconf question
 Manager-only account, adds it to the group `admins`, which it creates when missing, and removes
 the file.

-The certificate is also accepted by road-warrior (IKEv2 EAP-TLS) access, which checks
+The certificate is also accepted by IKEv2 (EAP-TLS) access, which checks
 certificates only, so `disable` does not affect it; `remove` revokes the certificate for both.

+### Apple VPN profile
+
+While `p2s.enabled` is `true` and `wan.local_fqdn` is set, `/users/<name>/apple-profile` and a
+user's own `/account/apple-profile` give an unsigned Apple configuration profile (`.mobileconfig`)
+that sets up IKEv2 access in the built-in VPN client of macOS, iOS and iPadOS. It holds:
+
+- the P2S CA and the root CA, the root installed as a trusted root;
+- the user's certificate and key as a PKCS#12 encrypted with the password of the request, with
+  3DES and SHA-1, the only encryption Apple's clients read; the device asks for the password when
+  the profile is installed, and the router does not keep it;
+- an IKEv2 VPN to `wan.local_fqdn`, with the user name as the local identity, the certificate over
+  EAP-TLS, and AES-256, SHA2-256 and group 14 for IKE and ESP, as the router's IKEv2
+  connection (`road-warrior`) takes them;
+- with `p2s.dns_domains`, the router's resolver for those domains and their subdomains
+  (`SupplementalMatchDomains`). macOS and iOS use the DNS server of a VPN that does not carry all
+  traffic only for its match domains.
+
+The password is 8 to 128 characters. A user asking for the own profile also gives the current
+password and, when enrolled, a code.
+
 ### Console login and SSH

 A member of `admins` enrolled for TOTP may have console login: the Router Manager's Shell page
@@ -871,16 +892,23 @@ deploying.
 which is how a deferred install is expressed. `generic` is the module to choose when the
 router should be configured but the platform adds nothing.

-The shipped modules currently add nothing. Road-warrior clients are given the router
-itself as their DNS server and the router forwards through its own `systemd-resolved`, so
-no provider resolver has to be advertised or routed through the tunnel on any platform.
+The shipped modules currently add nothing. IKEv2, OpenVPN and WireGuard clients are given the
+router's addresses of `p2s.dns_listen` as their DNS servers, by default the internal address,
+the WireGuard clients in the configuration the Router Manager makes for a device (`DNS =`),
+where `vpn-router-resolver.service`, dnsmasq with `/etc/vpn-router/dnsmasq.conf`, answers and
+the firewall opens port 53 for the client pools and the WireGuard network, so no provider resolver has to be advertised or
+routed through the tunnel on any platform. dnsmasq forwards to `systemd-resolved` on
+127.0.0.53, which keeps only its loopback stubs, and forwards no name without a dot, so the
+router's own host name, `_gateway` and `localhost` are not answered to the clients. The clients reach
+the internal address when it is inside `local.cidrs`, which they route through the tunnel. Port 53
+of the other addresses stays free for the name server (see Name server).
 The modules exist as the documented place for platform specifics if that changes.

 A module may define any of the following, and takes the default for anything it omits:

 | Name | Type | Effect |
 |---|---|---|
-| `EXTRA_P2S_DNS` | `str` | added to the road-warrior pool `dns` list |
+| `EXTRA_P2S_DNS` | `str` | added to the `dns` list of the IKEv2 address pool |
 | `EXTRA_LOCAL_TS` | `str` | added to `local_ts` on both connections |
 | `apply(ctx)` | function | called once the system is configured, to apply platform-specific state; must be idempotent |

@@ -913,7 +941,7 @@ configuration: no key, identity, subnet, or address but the client's. They show
 |---|---|
 | `basic` (default) | The overall status (`ok` or `degraded`), the time and the Client IP |
 | `standard` | Also the `vpn-router` version, the `vpn-router-manager` version or that it is not installed, and the number of active services and of services in any other state, without their names |
-| `full` | Also each service and its state, Docker, how many site-to-site connections are set up and how many of them are established (`site_to_site`: `connections` and `established`, `null` when swanctl cannot be asked), road-warrior, OpenVPN and WireGuard |
+| `full` | Also each service and its state, Docker, how many site-to-site connections are set up and how many of them are established (`site_to_site`: `connections` and `established`, `null` when swanctl cannot be asked), IKEv2, OpenVPN and WireGuard |

 The Client IP is the address the request came from: the last entry of `X-Forwarded-For` for a
 request from one of `web.trusted_proxies`, by default the address the request came in on, so
@@ -948,7 +976,7 @@ curl http://10.0.0.4:17081/
 | `/status` | The same status as JSON |
 | `/auth` | Signing in with a user's password and TOTP code, refreshing and signing out |
 | `/config` | The configuration without its secret options, and what the router resolved and runs, as JSON; needs a token |
-| `/users` | The users of OpenVPN and road-warrior access; needs a token |
+| `/users` | The users of OpenVPN and IKEv2 access; needs a token |
 | `/service-accounts` | The service accounts; needs a token |
 | `/groups` | The groups of users; needs a token |
 | `/site-to-site` | The site-to-site connections: list, add, change and remove; needs a token |
@@ -961,14 +989,14 @@ curl http://10.0.0.4:17081/
 The status holds the state of `vpn-router-setup`, `slapd` and each PostgreSQL cluster unit
 (`postgresql@<version>-<cluster>`, or `postgresql` as `no cluster` without one), of
 `vpn-router-manager` when that package is installed, of `strongswan` when site-to-site or
-road-warrior access is configured, of `wg-quick@wg0` when WireGuard is, and of
+IKEv2 access is configured, of `wg-quick@wg0` when WireGuard is, and of
 `openvpn-server@vpn-router` when OpenVPN is; the number of connected
 OpenVPN clients, from the server's status file, which OpenVPN rewrites every 5 seconds; the package version and,
 as `manager_version`, the installed version of `vpn-router-manager` (`null`, shown as not installed, without it); whether
 Docker is installed, and when it is, the state of `docker.service` and of `vpn-router-docker`
 (the Docker rules), which do not change `status`; as `site_to_site`, the number of site-to-site
 connections that are set up (`connections`) and of those established (`established`, `null` when
-swanctl cannot be asked), without their names; the number of connected road-warrior (IPsec P2S) clients; and
+swanctl cannot be asked), without their names; the number of connected IKEv2 clients; and
 the WireGuard peers with the age of their last handshake and their traffic. `status` is `ok` when
 all these services are active, and `degraded` otherwise.

@@ -979,7 +1007,7 @@ curl http://10.0.0.4:7081/status

 ### Tokens and signing in

-`/config`, `/users`, `/service-accounts`, `/groups`, `/site-to-site`, `/backup`, `/remote-access`, `/ca`, `/logs`, `/sites`, `/dns`, `/shell` and `/account` need a JWT in an `Authorization: Bearer` header, signed with
+`/config`, `/metrics/history`, `/metrics/settings`, `/users`, `/service-accounts`, `/groups`, `/site-to-site`, `/backup`, `/remote-access`, `/ca`, `/logs`, `/sites`, `/dns`, `/shell` and `/account` need a JWT in an `Authorization: Bearer` header, signed with
 HS256 by the key the web service makes on its first run, `/etc/vpn-router/web.key` (root only).
 The key never leaves the router; while it does not exist these paths and `/auth` are not served
 (404). A missing, expired or wrongly signed token, or one of another algorithm, gets 401 with
@@ -1106,8 +1134,8 @@ read at each request:
 | `GET /logs/file?path=<path>&lines=<n>` | `{"lines": [...]}`: the last lines of a file `web.log_files` lists |

 The units are the package's own (`vpn-router-setup`, `-web`, `-metrics`, `-pki`, `-backup`,
-`-caddy`), `vpn-router-manager`, `caddy`, `slapd`, `nslcd`, `postgresql`, `strongswan`,
-`wg-quick@wg0`, `openvpn-server@vpn-router` and `ssh`. `lines` is 1 to 1000, 200 without it. A
+`-caddy`, `-resolver`, `-webdav`), `vpn-router-manager`, `caddy`, `slapd`, `nslcd`, `postgresql`,
+`strongswan`, `wg-quick@wg0`, `openvpn-server@vpn-router`, `ssh` and `pdns`. `lines` is 1 to 1000, 200 without it. A
 file is read from at most its last MiB, so very long lines give fewer lines. A unit or a file not
 in the lists is 404, as is a listed file that does not exist.

@@ -1148,10 +1176,15 @@ curl -X PUT -H "Authorization: Bearer $TOKEN" --data-binary @site.zip \

 | Request | Answer |
 | --- | --- |
-| `GET /dns` | `{"settings", "installed", "running", "records", "manual", "problem"}`: the `dns` section, whether PowerDNS is installed and runs, the records it serves, the manual records, and why they cannot be read, `null` when they can |
+| `GET /dns` | `{"settings", "installed", "running", "domains", "problem"}`: the `dns` section, whether PowerDNS is installed and runs, the domains, each `{"name", "sites", "ttl", "secondaries", "manual", "records"}` with its secondaries `{"nameserver", "address"}`, its manual records and the records it serves, and why they cannot be read, `null` when they can |
 | `PUT /dns` | Changes any of the settings of the `dns` section |
-| `POST /dns/records` | Adds a manual record: `{"name", "type", "content", "ttl"?}`; `name` is relative to `dns.zone`, `@` for the zone itself, or absolute with a final dot, and `ttl` is `dns.ttl` without it |
-| `DELETE /dns/records?name=&type=&content=` | Removes the manual records of the name and type, only the one of `content` when it is given |
+| `POST /dns/domains` | Adds a domain: `{"name", "sites"?, "ttl"?}`; an existing name is 409 |
+| `PUT /dns/domains/<domain>` | Changes `sites` or `ttl` of the domain |
+| `DELETE /dns/domains/<domain>` | Removes the domain with its secondaries and manual records |
+| `POST /dns/domains/<domain>/secondaries` | Adds a secondary name server, or changes its address: `{"nameserver", "address"}` |
+| `DELETE /dns/domains/<domain>/secondaries/<nameserver>` | Removes the secondary name server |
+| `POST /dns/domains/<domain>/records` | Adds a manual record: `{"name", "type", "content", "ttl"?}`; `name` is relative to the domain, `@` for the domain itself, or absolute with a final dot, and `ttl` is the domain's without it |
+| `DELETE /dns/domains/<domain>/records?name=&type=&content=` | Removes the manual records of the name and type, only the one of `content` when it is given |

 A TXT content without quotes is quoted; MX is `<preference> <host>`, SRV `<priority> <weight>
 <port> <host>` and CAA `<flags> <tag> "<value>"`. A CNAME must be its name's only record.
@@ -1173,6 +1206,7 @@ and answer bodies are JSON; a request body is at most 65536 bytes.
 | `POST /users/<name>/unlock` | | the user |
 | `DELETE /users/<name>` | | `{"name", "removed": true}` |
 | `GET /users/<name>/profile` | | `{"name", "profile"}`, the OpenVPN client profile |
+| `POST /users/<name>/apple-profile` | `{"password"}` | `{"name", "profile"}`, the Apple configuration profile of IKEv2 access (see Apple VPN profile) |
 | `POST /users/<name>/otp` | | `{"name", "secret", "uri"}`, a new TOTP secret; nothing is stored |
 | `PUT /users/<name>/otp` | `{"secret", "code"}` | the user, once the code matches the secret |
 | `DELETE /users/<name>/otp` | | the user |
@@ -1182,7 +1216,7 @@ and answer bodies are JSON; a request body is at most 65536 bytes.
 A failure is `{"error": ...}` with 400 for an invalid request, 404 for a user that does not
 exist or is a service account, 409 for a user that exists and 500 otherwise. `/users` does not
 list service accounts; `/service-accounts` serves them. `/users` works whether or not OpenVPN or
-road-warrior access is enabled; the profile needs OpenVPN. Passwords, private keys and TOTP
+IKEv2 access is enabled; the profile needs OpenVPN. Passwords, private keys and TOTP
 secrets cross the internal network in plain HTTP, like the token.

 ```bash
@@ -1229,6 +1263,8 @@ router manages them, their display name and description included. A failure is o
 | `POST /account/passkeys` | `{"current_password", "current_code"}` | `{"id", "options"}`: a pending registration, valid 2 minutes, and the options of `navigator.credentials.create` in their JSON form |
 | `PUT /account/passkeys` | `{"id", "credential", "label"?}`, `credential` the browser's answer as its `toJSON()` gives it; `label` at most 64 characters, `Passkey` without one | the user |
 | `DELETE /account/passkeys/<id>` | | the user |
+| `POST /account/profile` | `{"current_password", "current_code"}` | `{"name", "profile"}`, the user's OpenVPN client profile |
+| `POST /account/apple-profile` | `{"current_password", "current_code", "password"}` | `{"name", "profile"}`, the user's Apple configuration profile of IKEv2 access (see Apple VPN profile) |

 `current_code` is needed only for a user enrolled for TOTP; removing a passkey needs neither. A wrong current password or code gets
 403 and counts as a failed login; slapd accepts each code once, so a code used to sign in is not
@@ -1296,14 +1332,26 @@ The answer of `GET /backup` holds:

 A change is made, checked and applied as for `/site-to-site`.

+### The /metrics/settings API
+
+`/metrics/settings` shows and changes the settings of the metrics service, with the same token as
+`/users`.
+
+| Request | Body | Answer |
+| --- | --- | --- |
+| `GET /metrics/settings` | | `{"settings"}`: the `metrics` section without `otlp_password`, with `otlp_password_set` |
+| `PUT /metrics/settings` | any of the settings of the `metrics` section; an empty or absent `otlp_password` keeps the secret, and an empty `otlp_username` removes it | `{"settings"}` |
+
+A change is made, checked and applied as for `/site-to-site`.
+
 ### The /remote-access API

-`/remote-access` shows and changes the remote access systems, IKEv2 road-warrior (`p2s`),
+`/remote-access` shows and changes the remote access systems, IKEv2 (`p2s`),
 OpenVPN (`openvpn`) and WireGuard (`wireguard`), with the same token as `/users`.

 | Request | Body | Answer |
 | --- | --- | --- |
-| `GET /remote-access` | | `{"p2s", "openvpn", "wireguard", "running", "local_fqdn", "wireguard_server"}`; `wireguard_server` is `{"public_key", "endpoint", "allowed_ips"}`: the router's WireGuard public key (`null` before setup made it), `<wan.local_fqdn>:<wireguard.listen_port>` (`null` without a name) and the networks a peer reaches through the tunnel, the router's local CIDRs and the WireGuard network |
+| `GET /remote-access` | | `{"p2s", "openvpn", "wireguard", "running", "local_fqdn", "wireguard_server"}`; `wireguard_server` is `{"public_key", "endpoint", "allowed_ips", "dns"}`: the router's WireGuard public key (`null` before setup made it), `<wan.local_fqdn>:<wireguard.listen_port>` (`null` without a name), the networks a peer reaches through the tunnel, the router's local CIDRs and the WireGuard network, and the addresses of the remote access clients' resolver (`[]` while it does not run) |
 | `PUT /remote-access/<system>` | any of the settings of the section `p2s`, `openvpn` or `wireguard` | the section |

 `running` tells for each system whether setup runs it. IKEv2 and OpenVPN run once enabled with an
@@ -1551,9 +1599,9 @@ vpn-config-edit set --restart sites.webdav true
 ### Name server

 While `dns.enabled` is `true`, `vpn-router-setup` runs PowerDNS (`pdns.service`) as the
-authoritative name server of one zone, `dns.zone`, on port 53 of the addresses of `dns.listen`
+primary name server of the router's domains, on port 53 of the addresses of `dns.listen`
 (`internal`, `external`, the default, or `both`), which the firewall opens for UDP and TCP. The
-records are in the database `vpn-router-dns` (password in `/etc/vpn-router/dns-database.secret`),
+domains and records are in the database `vpn-router-dns` (password in `/etc/vpn-router/dns-database.secret`),
 read by PowerDNS's gpgsql backend; setup writes the settings
 `/etc/powerdns/pdns.d/vpn-router.conf` (root, group `pdns`, 0640) and installs `pdns-server` and
 `pdns-backend-pgsql` from the Ubuntu archive with `vpn-router-install@dns.service` when they are
@@ -1561,21 +1609,31 @@ missing, without the recommended bind backend.

 | Setting | Meaning |
 | --- | --- |
-| `dns.zone` | The zone, such as `sites.example.com` |
-| `dns.nameserver` | The name server's host name, the zone's NS and the SOA's primary |
-| `dns.addresses` | The public addresses of the zone's apex, of the name server when it is in the zone, and of every host name of an enabled site in the zone |
-| `dns.ttl` | The TTL of the records and the SOA's negative TTL, 60 to 86400 seconds, 300 by default |
+| `dns.nameserver` | The name server's host name, the primary NS and the SOA's primary of every domain |
+| `dns.addresses` | The public addresses of the domains' apexes, of the name server in a domain it is inside, and of the sites' host names |
+| `dns.ttl` | The TTL of the records and the SOA's negative TTL of a domain without its own, 60 to 86400 seconds, 300 by default |

-Records added with `/dns` or the Router Manager (A, AAAA, CNAME, TXT, MX, SRV, CAA) are served
-too, but not those of a name and type the zone's own records have. Setup writes the zone at each
-run; the SOA's serial grows only when the records change. While P2S or OpenVPN is enabled,
-systemd-resolved answers their clients on port 53 of the external addresses, so `dns.listen` must
-be `internal`. The parent zone must delegate `dns.zone` to `dns.nameserver`, with glue records for
-a name server inside the zone.
+The domains are added with `/dns` or the Router Manager, each with:
+
+- **Site records**: every host name of an enabled site gets A and AAAA records of `dns.addresses`
+  in the closest domain it is in, when that domain has site records;
+- **TTL**: the TTL of its records, `dns.ttl` when not set;
+- **Secondaries**: name servers, each a host name, which becomes an NS of the domain, and the
+  address it transfers the domain from. The router notifies that address of every change and
+  allows it zone transfers (AXFR); a secondary's name inside the domain gets an A or AAAA record of
+  that address;
+- **Manual records** (A, AAAA, CNAME, TXT, MX, SRV, CAA), served too, but not those of a name and
+  type the domain's own records have.
+
+A domain inside another domain of the router is delegated from it with NS records. Setup writes the
+domains at each run, and after each change through `/dns`; the SOA's serial grows only when the
+records change. While IKEv2, OpenVPN or WireGuard is enabled, dnsmasq answers their clients on port 53
+of the addresses of `p2s.dns_listen`, by default the internal address, so `dns.listen` must not
+share an interface with it. The parent zone of each domain must delegate it to `dns.nameserver` and
+the secondaries, with glue records for name servers inside the domain.

 ```sh
-vpn-config-edit set dns.zone sites.example.com
-vpn-config-edit set dns.nameserver ns1.sites.example.com
+vpn-config-edit set dns.nameserver ns1.example.com
 vpn-config-edit set dns.addresses 203.0.113.10
 vpn-config-edit set --restart dns.enabled true
 ```
@@ -1590,7 +1648,7 @@ takes a sample of the router with `psutil`:
 - the free and the total space of `/`;
 - the bytes received and sent per second on the external and the internal interface;
 - the 1, 5 and 15 minute load averages;
- the VPN clients of each enabled VPN system: road-warrior (IPsec P2S) and OpenVPN clients, and
+- the VPN clients of each enabled VPN system: IKEv2 and OpenVPN clients, and
  WireGuard peers with a handshake in the last 3 minutes;
 - for each site-to-site connection that is set up: whether it is up (1 or 0), the bytes and the
  packets per second received and sent through its child SAs since the previous sample, and the
@@ -1,3 +1,131 @@
+vpn-router (0.34.0-1) unstable; urgency=medium
+
+  feature: the web service shows and changes the settings of the metrics service at /metrics/settings, and OpenVPN starts on a new router, as setup installs CRLs that revoke nothing.
+
+  * GET and PUT /metrics/settings show and change the metrics section;
+    otlp_password is never shown, an empty one keeps it, and an empty
+    otlp_username removes it.
+  * A CRL without revoked certificates is installed for strongSwan and
+    OpenVPN.
+
+ -- Slawomir Koszewski <slawek@koszewscy.waw.pl>  Wed, 28 Oct 2026 22:00:00 +0100
+
+vpn-router (0.33.3-1) unstable; urgency=medium
+
+  fix: vpn-router-setup runs on a new installation once libpq can be found.
+
+  * The vpn-router-setup unit waits, with wait-for-libpq, until libpq is in
+    the linker cache before it runs setup.
+  * The package starts vpn-router-setup without waiting for it.
+
+ -- Slawomir Koszewski <slawek@koszewscy.waw.pl>  Wed, 28 Oct 2026 21:00:00 +0100
+
+vpn-router (0.33.2-1) unstable; urgency=medium
+
+  fix: the router's IPsec remote access is called IKEv2 instead of road-warrior.
+
+  * The README, the package description, the installer's questions, the
+    status page, the messages of the web service and the examples say
+    IKEv2 access and IKEv2 clients; the strongSwan connection keeps its
+    name, road-warrior.
+
+ -- Slawomir Koszewski <slawek@koszewscy.waw.pl>  Tue, 27 Oct 2026 23:00:00 +0100
+
+vpn-router (0.33.1-1) unstable; urgency=medium
+
+  fix: the name server is the primary of any number of domains, each with secondary name servers and a switch for the records of the sites.
+
+  * The domains, their secondaries and manual records are kept in the
+    vpn-router-dns database and changed through /dns/domains; dns.zone is
+    removed.
+  * Each domain is served as a primary zone: the router and its
+    secondaries are its NS, and each secondary's address is notified of
+    changes and may transfer the zone.
+  * A domain with site records gives the host names of the enabled sites
+    in it A and AAAA records of dns.addresses; a domain inside another is
+    delegated from it.
+  * Manual records belong to a domain; those of the single zone are
+    dropped.
+
+ -- Slawomir Koszewski <slawek@koszewscy.waw.pl>  Tue, 27 Oct 2026 20:00:00 +0100
+
+vpn-router (0.33.0-1) unstable; urgency=medium
+
+  feature: road-warrior clients resolve the domains of the new setting p2s.dns_domains with the router's resolver.
+
+  * p2s.dns_domains lists up to 16 domains; setup pushes them to IKEv2
+    clients as INTERNAL_DNS_DOMAIN (RFC 8598, attribute 25) of the
+    road-warrior pool.
+  * The Apple VPN profile names them as match domains of the router's
+    resolver, which macOS and iOS use for those domains.
+
+ -- Slawomir Koszewski <slawek@koszewscy.waw.pl>  Tue, 27 Oct 2026 18:00:00 +0100
+
+vpn-router (0.32.1-1) unstable; urgency=medium
+
+  fix: a VPN user downloads the own OpenVPN client profile through /account, with the current password and code.
+
+  * POST /account/profile answers the user's OpenVPN client profile; it
+    needs the current password and, when enrolled, a code.
+
+ -- Slawomir Koszewski <slawek@koszewscy.waw.pl>  Tue, 27 Oct 2026 16:00:00 +0100
+
+vpn-router (0.32.0-1) unstable; urgency=medium
+
+  feature: the web service gives Apple VPN profiles that set up IKEv2 road-warrior access on macOS, iOS and iPadOS.
+
+  * POST /users/<name>/apple-profile and POST /account/apple-profile answer
+    an unsigned .mobileconfig with the P2S CA and the root CA, the user's
+    certificate and key as a PKCS#12 encrypted with the password of the
+    request, and an IKEv2 VPN to wan.local_fqdn with EAP-TLS and the
+    proposals of the road-warrior connection.
+  * A user's own profile needs the current password and, when enrolled, a
+    code.
+
+ -- Slawomir Koszewski <slawek@koszewscy.waw.pl>  Tue, 27 Oct 2026 14:00:00 +0100
+
+vpn-router (0.31.3-1) unstable; urgency=medium
+
+  fix: WireGuard clients may use the router's DNS resolver, which runs while WireGuard does, and /remote-access names its addresses for their configuration.
+
+  * The firewall opens port 53 of the remote access clients' resolver for
+    the WireGuard network, as it does for the IKEv2 and OpenVPN pools.
+  * The resolver runs while WireGuard is the only remote access enabled.
+  * GET /remote-access answers the resolver's addresses as
+    wireguard_server.dns.
+  * dns.listen may not share an interface with p2s.dns_listen while
+    WireGuard is enabled either.
+
+ -- Slawomir Koszewski <slawek@koszewscy.waw.pl>  Tue, 27 Oct 2026 12:00:00 +0100
+
+vpn-router (0.31.2-1) unstable; urgency=medium
+
+  fix: dnsmasq answers the remote access clients' DNS queries, so they no longer get the router's own host name with all its addresses from systemd-resolved.
+
+  * vpn-router-resolver.service runs dnsmasq on the addresses of
+    p2s.dns_listen, forwarding to systemd-resolved's stub on 127.0.0.53;
+    names without a dot are not forwarded. The package depends on
+    dnsmasq-base.
+  * systemd-resolved keeps its loopback stubs only; setup removes the
+    drop-in that made it listen for the clients.
+  * /logs shows the journal of vpn-router-resolver, vpn-router-webdav and
+    pdns.
+
+ -- Slawomir Koszewski <slawek@koszewscy.waw.pl>  Tue, 27 Oct 2026 11:00:00 +0100
+
+vpn-router (0.31.1-1) unstable; urgency=medium
+
+  fix: the remote access clients' resolver answers on the internal address by default, chosen by p2s.dns_listen, so the name server can take port 53 of the external addresses.
+
+  * The new setting p2s.dns_listen chooses the addresses of the resolver the
+    road-warrior and OpenVPN clients are given: internal, the default,
+    external or both. The firewall opens port 53 for the client pools on
+    those addresses only.
+  * dns.listen is refused only when it shares an interface with
+    p2s.dns_listen while IKEv2 or OpenVPN is enabled.
+
+ -- Slawomir Koszewski <slawek@koszewscy.waw.pl>  Mon, 26 Oct 2026 23:00:00 +0100
+
 vpn-router (0.31.0-1) unstable; urgency=medium

  feature: Caddy serves static web sites from folders on the router, defined in their own database, with files uploaded through the web service or WebDAV, and an optional PowerDNS name server answers for a zone of the sites.
@@ -38,6 +38,7 @@ Depends: ${misc:Depends},
         openvpn-auth-ldap,
         iproute2,
         systemd-resolved,
+         dnsmasq-base,
         zstd
 Recommends: bash-completion
 Suggests: caddy,
@@ -45,10 +46,10 @@ Suggests: caddy,
          pdns-server,
          pdns-backend-pgsql,
          proxmox-backup-client-static
-Description: Linux VPN router with IPSec, road-warrior, OpenVPN and WireGuard support
+Description: Linux VPN router with IPSec, IKEv2, OpenVPN and WireGuard support
 Configures a Linux host or virtual machine as a VPN router: site-to-site
 IKEv2 IPSec (strongSwan swanctl) with pre-shared keys or certificates,
- optional road-warrior access using EAP-TLS, optional OpenVPN with a
+ optional IKEv2 access using EAP-TLS, optional OpenVPN with a
 certificate and a password per user, kept in a local LDAP directory, optional
 WireGuard, and the routing, NAT, MSS clamping and firewall rules a router
 needs. Its two-level CA, whose root may be kept offline, has issuing CAs for
@@ -71,9 +71,11 @@ case "$1" in
        # setting the forward policy all belong to vpn-router-setup, which does
        # them only once the configuration says this host is a router.

-        # The web service waits for libpq in the linker cache, which dpkg
-        # refreshes after this script, so it is started without waiting for it.
+        # The setup and web services wait for libpq in the linker cache, which
+        # dpkg refreshes after this script, so they are started without waiting
+        # for them.
        if [ -d /run/systemd/system ]; then
+            systemctl --no-block restart vpn-router-setup.service >/dev/null 2>&1 || true
            systemctl --no-block restart vpn-router-web.service >/dev/null 2>&1 || true
        fi
        ;;
@@ -46,6 +46,7 @@ case "$1" in
        rm -f /etc/swanctl/conf.d/site-to-site.conf \
              /etc/swanctl/conf.d/road-warrior.conf \
              /etc/systemd/resolved.conf.d/p2s-forwarder.conf \
+              /etc/vpn-router/dnsmasq.conf \
              /etc/wireguard/wg0.conf \
              /etc/openvpn/server/vpn-router.conf \
              /etc/openvpn/server/vpn-router-ldap.conf \
@@ -3,7 +3,7 @@
 	dh $@

 override_dh_installsystemd:
-	dh_installsystemd --name=vpn-router-setup
+	dh_installsystemd --name=vpn-router-setup --no-start
 	dh_installsystemd --name=vpn-router-docker
 	dh_installsystemd --name=vpn-router-web --no-start
 	dh_installsystemd --name=vpn-router-metrics --no-enable --no-start
@@ -12,4 +12,5 @@ override_dh_installsystemd:
 	dh_installsystemd --name=vpn-router-pki --no-enable --no-start
 	dh_installsystemd --name=vpn-router-caddy --no-enable --no-start
 	dh_installsystemd --name=vpn-router-webdav --no-enable --no-start
+	dh_installsystemd --name=vpn-router-resolver --no-enable --no-start
 	dh_installsystemd --name=vpn-router-install@ --no-enable --no-start
@@ -4,7 +4,7 @@ Choices: none, generic, azure, gcp
 Default: none
 Description: Platform:
 Which platform this router runs on. The choice loads platform-specific
- additions, such as the provider DNS resolver for road-warrior clients.
+ additions, such as the provider DNS resolver for IKEv2 clients.
 .
 none defers configuration entirely: the package installs its files and
 changes nothing on the machine. Choose it when the router will be configured
@@ -58,7 +58,7 @@ Type: string
 Default:
 Description: Local router FQDN:
 Fully-qualified domain name of this router (for example
- router.example.com). Used as the road-warrior server identity and
+ router.example.com). Used as the IKEv2 server identity and
 certificate common name.

 Template: vpn-router/local_id_mode
@@ -122,15 +122,15 @@ Description: Pre-shared key (PSK):
 Template: vpn-router/p2s_enabled
 Type: boolean
 Default: false
-Description: Enable road-warrior (P2S) access?
+Description: Enable IKEv2 access?
 If enabled, this router accepts IKEv2 EAP-TLS connections from individual
 clients, with certificates of the router's P2S issuing CA.

 Template: vpn-router/p2s_address_pool
 Type: string
 Default:
-Description: Road-warrior address pool:
- CIDR block assigned to road-warrior clients (for example 172.16.0.0/24).
+Description: IKEv2 address pool:
+ CIDR block assigned to IKEv2 clients (for example 172.16.0.0/24).

 Template: vpn-router/pki_root_name
 Type: string
@@ -0,0 +1,15 @@
+[Unit]
+Description=VPN Router DNS resolver of the remote access clients
+Documentation=file:/usr/share/doc/vpn-router/README.md
+After=network-online.target systemd-resolved.service
+Wants=network-online.target
+ConditionPathExists=/etc/vpn-router/dnsmasq.conf
+
+[Service]
+Type=simple
+ExecStart=/usr/sbin/dnsmasq --keep-in-foreground --pid-file= --log-facility=- --conf-file=/etc/vpn-router/dnsmasq.conf
+Restart=on-failure
+RestartSec=5
+
+[Install]
+WantedBy=multi-user.target
@@ -6,6 +6,7 @@ After=network-online.target docker.service postgresql.service

 [Service]
 Type=oneshot
+ExecStartPre=/usr/lib/vpn-router/wait-for-libpq
 ExecStart=/usr/lib/vpn-router/setup
 RemainAfterExit=yes

@@ -7,7 +7,7 @@ disables the unit.
 Every SAMPLE_SECONDS, on the minute, a sample is taken with psutil: the CPU utilization since the
 previous sample, the memory used and in total, the free and the total space of /, the bytes
 received and sent per second on the external and the internal interface, and the load averages;
-and the VPN clients of each enabled VPN system (vpnrouter_status): road-warrior (p2s) and
+and the VPN clients of each enabled VPN system (vpnrouter_status): IKEv2 (p2s) and
 OpenVPN clients and WireGuard peers with a recent handshake; and of each site-to-site connection
 that is set up, whether it is up, the bytes and packets per second through its child SAs since
 the previous sample, and how long its IKE SA has been up. The interfaces, the enabled systems and
@@ -44,7 +44,7 @@ from vpnrouter import fail, warn
 BEFORE_RULES = pathlib.Path('/etc/ufw/before.rules')
 UFW_DEFAULTS = pathlib.Path('/etc/default/ufw')
 WG_DIR       = pathlib.Path('/etc/wireguard')
-WEB_STATE    = pathlib.Path('/run/vpn-router/web.json')
+WEB_STATE    = vpnrouter.WEB_STATE

 #: The state, the current step and the failure of the last run, which the bootstrap services show.
 SETUP_STATE  = pathlib.Path('/run/vpn-router/setup.json')
@@ -81,6 +81,9 @@ CADDY_PKI_DIR = pathlib.Path('/etc/caddy/vpn-router-pki')
 #: The certificates and keys of the sites of tls file, <site>/cert.pem and key.pem.
 CADDY_SITES_DIR = pathlib.Path('/etc/caddy/vpn-router-sites')

+#: The unit of dnsmasq, the resolver of the remote access clients.
+RESOLVER_UNIT = 'vpn-router-resolver.service'
+
 #: The unit of rclone's WebDAV server of the sites' folders.
 WEBDAV_UNIT = 'vpn-router-webdav.service'

@@ -240,11 +243,13 @@ def filter_block(ctx):
        lines += ['# OPENVPN RULES END']

    pools = [pool for ready, pool in ((vpnrouter.p2s_ready(ctx), ctx['p2s_address_pool']),
-                                      (vpnrouter.openvpn_ready(ctx), ctx['openvpn_pool'])) if ready]
-    if pools and ctx['local_addr_list']:
+                                      (vpnrouter.openvpn_ready(ctx), ctx['openvpn_pool']),
+                                      (vpnrouter.wg_ready(ctx), ctx['wg_network'])) if ready]
+    # The remote access clients' resolver answers on the addresses of p2s.dns_listen.
+    if pools and ctx['p2s_resolver_addrs']:
        lines += ['', '# P2S DNS RULES START']
        for pool in pools:
-            for address in ctx['local_addr_list']:
+            for address in ctx['p2s_resolver_addrs']:
                lines += [
                    f'-A ufw-before-input -s {pool} -d {address} -p udp --dport 53 -j ACCEPT',
                    f'-A ufw-before-input -s {pool} -d {address} -p tcp --dport 53 -j ACCEPT',
@@ -675,6 +680,19 @@ def caddy_address(host, port, tls):
    return f'{"http://" if tls == "none" else ""}{host}:{port}'


+def manage_resolver(changed):
+    """Run dnsmasq, the resolver of the remote access clients, while configure wrote its configuration, restarting it when
+    that changed, and stop it when not. It starts after systemd-resolved has left the addresses it takes."""
+    if not vpnrouter.RESOLVER_CONF.exists():
+        if unit_is_active(RESOLVER_UNIT):
+            run(['systemctl', 'disable', '--now', RESOLVER_UNIT], check=False)
+        return
+    if not unit_is_active(RESOLVER_UNIT):
+        run(['systemctl', 'enable', '--now', RESOLVER_UNIT], check=False)
+    elif 'resolver' in changed:
+        run(['systemctl', 'restart', RESOLVER_UNIT], check=False)
+
+
 def manage_caddy(cfg, ctx):
    """Run Caddy, the HTTPS proxy of the router's services and the server of the web sites, while either is wanted, and
    stop it when not.
@@ -803,12 +821,12 @@ def manage_webdav(ctx):


 def manage_dns(cfg, ctx):
-    """Run PowerDNS, the name server of dns.zone, on the addresses of dns.listen while DNS is enabled, and stop it when
-    not; its packages are installed when they are missing.
+    """Run PowerDNS, the primary name server of the domains of vpnrouter_dns, on the addresses of dns.listen while DNS
+    is enabled, and stop it when not; its packages are installed when they are missing.

    The settings, vpnrouter_dns.PDNS_CONF, are written before the packages are installed, so the server their
-    installation starts answers on those addresses only, beside systemd-resolved's stub on 127.0.0.53. The zone gets
-    the host names of the enabled sites, and keeps those it has while the sites cannot be read.
+    installation starts answers on those addresses only, beside systemd-resolved's stub on 127.0.0.53. The domains
+    with site records get the host names of the enabled sites, and keep those they have while the sites cannot be read.
    """
    if not vpnrouter.dns_ready(ctx):
        if unit_is_active(vpnrouter_dns.UNIT):
@@ -936,6 +954,7 @@ def refresh_web(cfg, ctx):
            'internal_address': ctx['int_addr'],
            'internal_gateway': ctx['int_gateway_ip'],
            'local_cidrs': ctx['local_cidr_list'],
+            'client_dns': ctx['p2s_resolver_addrs'] if vpnrouter.RESOLVER_CONF.exists() else [],
            'site_to_site': [{
                'name': connection['name'],
                'local_identity': connection['local_id'],
@@ -1061,6 +1080,8 @@ def main():
    if 'resolved' in changed:
        progress('running', 'resolver')
        run(['systemctl', 'restart', 'systemd-resolved'], check=False)
+    progress('running', 'resolver of the remote access clients')
+    manage_resolver(changed)

    progress('running', 'platform module')
    run_platform_setup(cfg, ctx)
@@ -31,12 +31,17 @@ from vpnrouter_net import DEFAULT_LISTEN, LISTEN_CHOICES, LOOPBACK, ConfigError,

 CONFIG_FILE  = pathlib.Path('/etc/vpn-router/vpn-router.json')
 CONFIG_LOCK  = pathlib.Path('/run/vpn-router/config.lock')
+#: What setup resolved and runs, for the web service (setup's refresh_web).
+WEB_STATE    = pathlib.Path('/run/vpn-router/web.json')
 TEMPLATE_DIR = pathlib.Path('/usr/share/vpn-router/templates')

 SWANCTL_CONF_D = pathlib.Path('/etc/swanctl/conf.d')
 SITE_TO_SITE   = SWANCTL_CONF_D / 'site-to-site.conf'
 ROAD_WARRIOR   = SWANCTL_CONF_D / 'road-warrior.conf'
+#: The drop-in of systemd-resolved that earlier versions wrote for the remote access clients; removed when found.
 P2S_FORWARDER  = pathlib.Path('/etc/systemd/resolved.conf.d/p2s-forwarder.conf')
+#: The configuration of dnsmasq, the resolver of the remote access clients (vpn-router-resolver.service).
+RESOLVER_CONF  = pathlib.Path('/etc/vpn-router/dnsmasq.conf')
 WG_CONF        = pathlib.Path('/etc/wireguard/wg0.conf')
 #: The router's WireGuard public key, which setup writes with its private key.
 WG_PUBLIC_KEY  = pathlib.Path('/etc/wireguard/wg0.pub')
@@ -53,7 +58,7 @@ SCHEMA = {
    'wan':        {'local_fqdn': ''},
    'local':      {'cidrs': [], 'int_addr': '', 'int_gateway_ip': ''},
    'site_to_site': {},
-    'p2s':        {'enabled': False, 'address_pool': ''},
+    'p2s':        {'enabled': False, 'address_pool': '', 'dns_listen': 'internal', 'dns_domains': []},
    'wireguard':  {'enabled': False, 'address': '', 'listen_port': 51820},
    'openvpn':    {'enabled': False, 'address_pool': '', 'port': 1194, 'protocol': 'udp'},
    'docker':     {'mode': 'auto', 'exposed_ports': []},
@@ -64,7 +69,7 @@ SCHEMA = {
    'https':      {'enabled': True, 'email': '', 'web_port': 7444, 'manager_port': 7443, 'caddy_source': 'ubuntu'},
    'oidc':       {'enabled': False},
    'sites':      {'enabled': False, 'upload_max_mb': 512, 'webdav': False, 'webdav_port': 7445},
-    'dns':        {'enabled': False, 'zone': '', 'nameserver': '', 'addresses': [], 'listen': 'external', 'ttl': 300},
+    'dns':        {'enabled': False, 'nameserver': '', 'addresses': [], 'listen': 'external', 'ttl': 300},
    'pki':        {'root_name': 'VPN Router Root CA', 'root_days': 7300, 'ca_days': 3650, 'key': 'rsa-4096',
                   'crl_days': 7, 'root_crl_days': 180, 'publish': ['http'], 'p2s_name': 'VPN Router P2S CA',
                   's2s_name': 'VPN Router Site-to-Site CA', 'issuing_cas': {}, 'templates': {},
@@ -141,9 +146,13 @@ UPLOAD_MAX_MB = 10240
 #: The shortest and the longest dns.ttl, in seconds.
 DNS_TTL_RANGE = (60, 86400)

-#: A DNS name without a wildcard, in lowercase, of dns.zone and dns.nameserver.
+#: A DNS name without a wildcard, in lowercase, of dns.nameserver and the domains of the name server.
 ZONE_NAME = re.compile(r'^[a-z0-9]([a-z0-9-]{0,61}[a-z0-9])?(\.[a-z0-9]([a-z0-9-]{0,61}[a-z0-9])?)+$')

+#: A domain of p2s.dns_domains, one label or more, and the most domains.
+DNS_DOMAIN = re.compile(r'^[a-z0-9]([a-z0-9-]{0,61}[a-z0-9])?(\.[a-z0-9]([a-z0-9-]{0,61}[a-z0-9])?)*$')
+DNS_DOMAINS_MAX = 16
+
 #: The ports of the bootstrap services: the Router Manager's and the router's.
 BOOTSTRAP_PORTS = (17080, 17081)

@@ -570,20 +579,31 @@ def validate(cfg):

    dns = cfg['dns']
    if dns['enabled']:
-        for option in ('zone', 'nameserver'):
-            if not ZONE_NAME.match(dns[option].strip()):
-                raise ConfigError(f'dns.{option}: {dns[option]!r} is not a DNS name in lowercase')
+        if not ZONE_NAME.match(dns['nameserver'].strip()):
+            raise ConfigError(f'dns.nameserver: {dns["nameserver"]!r} is not a DNS name in lowercase')
        if not _get_list(cfg, 'dns', 'addresses'):
-            raise ConfigError('dns.enabled needs dns.addresses, the public addresses of the zone')
+            raise ConfigError('dns.enabled needs dns.addresses, the public addresses of the name server and the sites')
    for item in _get_list(cfg, 'dns', 'addresses'):
        _check_address(item, 'dns.addresses')
    if dns['listen'] not in LISTEN_CHOICES:
        raise ConfigError(f'dns.listen: {dns["listen"]!r} is not one of {", ".join(LISTEN_CHOICES)}')
    if not DNS_TTL_RANGE[0] <= dns['ttl'] <= DNS_TTL_RANGE[1]:
        raise ConfigError(f'dns.ttl: {dns["ttl"]} is not between {DNS_TTL_RANGE[0]} and {DNS_TTL_RANGE[1]} seconds')
-    if dns['enabled'] and dns['listen'] != 'internal' and (_get(cfg, 'p2s', 'enabled') or _get(cfg, 'openvpn', 'enabled')):
-        raise ConfigError('dns.listen: port 53 of the external addresses is the resolver of the remote access clients '
-                          'while p2s.enabled or openvpn.enabled is true; the name server can listen on internal only')
+    dns_domains = _get_list(cfg, 'p2s', 'dns_domains')
+    if len(dns_domains) > DNS_DOMAINS_MAX or len(set(dns_domains)) != len(dns_domains):
+        raise ConfigError(f'p2s.dns_domains: at most {DNS_DOMAINS_MAX} different domains')
+    for item in dns_domains:
+        if not DNS_DOMAIN.match(item):
+            raise ConfigError(f'p2s.dns_domains: {item!r} is not a DNS name in lowercase')
+    resolver_listen = _get(cfg, 'p2s', 'dns_listen')
+    if resolver_listen not in LISTEN_CHOICES:
+        raise ConfigError(f'p2s.dns_listen: {resolver_listen!r} is not one of {", ".join(LISTEN_CHOICES)}')
+    sides = {'internal': {'internal'}, 'external': {'external'}, 'both': {'internal', 'external'}}
+    remote_access = any(_get(cfg, system, 'enabled') for system in ('p2s', 'openvpn', 'wireguard'))
+    if dns['enabled'] and remote_access and sides[dns['listen']] & sides[resolver_listen]:
+        raise ConfigError(f'dns.listen: port 53 of the {" and ".join(sorted(sides[dns["listen"]] & sides[resolver_listen]))} '
+                          f'addresses is the resolver of the remote access clients (p2s.dns_listen {resolver_listen}) '
+                          'while p2s.enabled, openvpn.enabled or wireguard.enabled is true')

    for option in ('root_name', 'p2s_name', 's2s_name'):
        value = _get(cfg, 'pki', option)
@@ -933,6 +953,10 @@ def build_context(cfg, public_ip=None):
    openvpn_pool = _get(cfg, 'openvpn', 'address_pool')
    openvpn_network = ipaddress.ip_network(openvpn_pool) if openvpn_pool else None
    identities = {'fqdn': local_fqdn, 'public_ip': public_ip or '', 'internal_ip': int_addr}
+    # The addresses the remote access clients' resolver answers on, which p2s.dns_listen chooses.
+    resolver_addrs = [address for address in {'internal': [int_addr], 'external': local_addrs,
+                                               'both': [int_addr, *local_addrs]}[_get(cfg, 'p2s', 'dns_listen')]
+                      if address]

    connections = []
    for name, connection in cfg['site_to_site'].items():
@@ -976,9 +1000,13 @@ def build_context(cfg, public_ip=None):
        'p2s_enabled':     _get(cfg, 'p2s', 'enabled'),
        'p2s_address_pool': _get(cfg, 'p2s', 'address_pool'),
        'public_ip':       public_ip or '',
-        'p2s_dns':         _join(local_addrs, _split_list(extras['EXTRA_P2S_DNS'])),
+        'p2s_resolver_addrs': resolver_addrs,
+        'p2s_dns_domains': _get_list(cfg, 'p2s', 'dns_domains'),
+        'p2s_dns':         _join(resolver_addrs, _split_list(extras['EXTRA_P2S_DNS'])),
        'wg_enabled':      _get(cfg, 'wireguard', 'enabled'),
        'wg_address':      _get(cfg, 'wireguard', 'address'),
+        'wg_network':      str(ipaddress.ip_interface(_get(cfg, 'wireguard', 'address')).network)
+                           if _get(cfg, 'wireguard', 'address') else '',
        'wg_listen_port':  _get(cfg, 'wireguard', 'listen_port'),
        'wg_peers_begin':  WG_PEERS_BEGIN,
        'wg_peers_end':    WG_PEERS_END,
@@ -994,7 +1022,7 @@ def build_context(cfg, public_ip=None):
        'openvpn_ldap_conf': str(OPENVPN_LDAP),
        'openvpn_status':  vpnrouter_status.OPENVPN_STATUS,
        'openvpn_status_seconds': vpnrouter_status.OPENVPN_STATUS_SECONDS,
-        'p2s_dns_list':    _split_list(_join(local_addrs, _split_list(extras['EXTRA_P2S_DNS']))),
+        'p2s_dns_list':    _split_list(_join(resolver_addrs, _split_list(extras['EXTRA_P2S_DNS']))),
        'openvpn_ca':      str(vpnrouter_pki.OPENVPN_CA),
        'openvpn_crl':     str(vpnrouter_pki.OPENVPN_CRL),
        'server_cert':     str(vpnrouter_pki.VPN_SERVER_CERT),
@@ -1035,7 +1063,7 @@ def routing_ready(ctx):


 def p2s_ready(ctx):
-    """Road-warrior access needs its settings and the router's VPN server certificate, which the P2S CA issues."""
+    """IKEv2 access needs its settings and the router's VPN server certificate, which the P2S CA issues."""
    return bool(ctx['p2s_enabled'] and ctx['p2s_address_pool'] and ctx['local_fqdn'] and ctx['server_certificate'])


@@ -1064,7 +1092,7 @@ def webdav_ready(ctx):


 def dns_ready(ctx):
-    """The name server answers for dns.zone while dns.enabled is true."""
+    """The name server answers for its domains while dns.enabled is true."""
    return bool(ctx['dns_enabled'])


@@ -1161,7 +1189,7 @@ def configure(cfg=None, public_ip=None):
    """Render configuration files and provision PKI.

    Returns (ctx, changed) where changed is a set naming what needs reloading:
-    'swanctl', 'resolved', 'wireguard', 'openvpn'.
+    'swanctl', 'resolved', 'resolver', 'wireguard', 'openvpn'.
    """
    if cfg is None:
        cfg = load_config()
@@ -1218,11 +1246,15 @@ def configure(cfg=None, public_ip=None):
    elif remove(ROAD_WARRIOR):
        changed.add('swanctl')

-    if p2s_ready(ctx) or openvpn_ready(ctx):
-        if render(env, ctx, 'p2s-forwarder.conf.j2', P2S_FORWARDER, 0o644):
-            changed.add('resolved')
-    elif remove(P2S_FORWARDER):
+    # The resolver of the remote access clients is dnsmasq on the addresses of p2s.dns_listen; systemd-resolved keeps
+    # its loopback stub only, so its records of the router's own name stay on the router.
+    if remove(P2S_FORWARDER):
        changed.add('resolved')
+    if (p2s_ready(ctx) or openvpn_ready(ctx) or wg_ready(ctx)) and ctx['p2s_resolver_addrs']:
+        if render(env, ctx, 'dnsmasq.conf.j2', RESOLVER_CONF, 0o644):
+            changed.add('resolver')
+    elif remove(RESOLVER_CONF):
+        changed.add('resolver')

    if wg_ready(ctx):
        if render_wg_conf(env, ctx):
@@ -1,14 +1,19 @@
 """The router's authoritative name server, PowerDNS with its gpgsql backend, for vpn-router-setup and the web service.

-The name server answers for one zone, dns.zone, on the addresses of the interfaces of dns.listen. Its records are in
-the vpn-router-dns database, which provision() creates with its role and the password in DATABASE_SECRET, and fills with
+The name server is the primary of its domains and answers on the addresses of the interfaces of dns.listen. The
+domains, their secondary name servers and the records an administrator added (manual records) are in the
+vpn-router-dns database, which provision() creates with its role and the password in DATABASE_SECRET, and fills with
 the schema of pdns-backend-pgsql, PDNS_SCHEMA; DNS_SQL defines the router's own tables and procedures, and the first
-connection of a process loads it. apply() writes the zone: its SOA, its NS, dns.nameserver, A and AAAA records of
-dns.addresses for the zone's apex, for the name server when it is in the zone, and for every host name of an enabled
-site in the zone, and the records an administrator added (manual records), but those of a name and type the records
-before them have. The serial of the SOA grows only when the records change.
+connection of a process loads it.

-Every failure of the database raises DatabaseError; a record that cannot be added raises Failure.
+apply() writes every domain as a primary zone: its SOA with dns.nameserver, its NS, dns.nameserver and the name
+servers of its secondaries, the NS of the domains directly below it, A and AAAA records of dns.addresses for its apex,
+for those name servers inside it that are the router, and, when the domain has site records, for every host name of an
+enabled site whose closest domain it is, and the manual records, but those of a name and type the records before them
+have. A secondary's address is notified of every change (ALSO-NOTIFY) and may transfer the zone (ALLOW-AXFR-FROM); the
+serial of the SOA grows only when the records change.
+
+Every failure of the database raises DatabaseError; a request that cannot be done raises Failure.
 """

 import contextlib
@@ -19,6 +24,7 @@ import re
 import psycopg
 from psycopg.rows import dict_row

+import vpnrouter
 import vpnrouter_auth

 DATABASE = 'vpn-router-dns'
@@ -38,7 +44,9 @@ GROUP = 'pdns'
 #: The types of the manual records.
 TYPES = ('A', 'AAAA', 'CNAME', 'TXT', 'MX', 'SRV', 'CAA')

-#: The most manual records.
+#: The most domains, secondaries of a domain, and manual records of a domain.
+DOMAINS_MAX = 100
+SECONDARIES_MAX = 8
 MANUAL_MAX = 1000

 #: The refresh, retry and expire times of the SOA, in seconds.
@@ -65,7 +73,8 @@ class DatabaseError(Exception):


 class Failure(Exception):
-    """A record that cannot be added or removed; status is 2 invalid, 3 no such record."""
+    """A request that cannot be done; status is 2 invalid, 3 no such domain, secondary or record, 4 the domain
+    exists."""

    def __init__(self, message, status=2):
        super().__init__(message)
@@ -173,87 +182,210 @@ def check_record(zone, record):
    return {'name': name, 'type': kind, 'content': content, 'ttl': ttl}


-def manual():
-    """The manual records."""
-    with database() as connection:
-        return connection.execute('SELECT * FROM dns_manual_list()').fetchall()
+def closest(zones, name):
+    """The longest of the zones the name is in, None when it is in none."""
+    return max((zone for zone in zones if in_zone(zone, name)), key=len, default=None)


-def add(cfg, record):
-    """Add the manual record, or set the TTL of the same one; the record."""
-    zone = cfg['dns']['zone'].strip()
-    if not zone:
-        raise Failure('dns.zone is not set')
-    record = check_record(zone, record)
-    record['ttl'] = record['ttl'] or cfg['dns']['ttl']
+def check_domain(name):
+    """The domain name in lowercase without a final dot; Failure when it is not a DNS name."""
+    if not isinstance(name, str) or not vpnrouter.ZONE_NAME.match(name.strip().lower().rstrip('.')):
+        raise Failure(f'{name!r} is not a domain name')
+    return name.strip().lower().rstrip('.')
+
+
+def check_ttl(ttl):
+    if ttl is not None and (isinstance(ttl, bool) or not isinstance(ttl, int) or
+                            not vpnrouter.DNS_TTL_RANGE[0] <= ttl <= vpnrouter.DNS_TTL_RANGE[1]):
+        raise Failure(f'ttl must be {vpnrouter.DNS_TTL_RANGE[0]} to {vpnrouter.DNS_TTL_RANGE[1]} seconds')
+    return ttl
+
+
+def domain(connection, name):
+    """The domain; Failure with status 3 when there is none."""
+    row = next((row for row in connection.execute('SELECT * FROM dns_domains_list()').fetchall()
+                if row['name'] == name), None)
+    if row is None:
+        raise Failure(f'no domain {name}', 3)
+    return row
+
+
+def listing():
+    """Every domain with its secondaries, its manual records and the records the name server answers for it."""
    with database() as connection:
-        records = connection.execute('SELECT * FROM dns_manual_list()').fetchall()
-        same = [row for row in records if (row['name'], row['type']) == (record['name'], record['type'])]
-        others = [row for row in records if row['name'] == record['name'] and row['type'] != record['type']]
-        if len(records) >= MANUAL_MAX and record not in records:
-            raise Failure(f'the zone has {MANUAL_MAX} manual records')
-        if record['type'] == 'CNAME' and (others or [row for row in same if row['content'] != record['content']]):
+        secondaries = connection.execute('SELECT * FROM dns_secondaries_list()').fetchall()
+        manual = connection.execute('SELECT * FROM dns_records_list()').fetchall()
+        return [{**row,
+                 'secondaries': [{key: item[key] for key in ('nameserver', 'address')}
+                                 for item in secondaries if item['domain'] == row['name']],
+                 'manual': [{key: item[key] for key in ('name', 'type', 'content', 'ttl')}
+                            for item in manual if item['domain'] == row['name']],
+                 'records': connection.execute('SELECT * FROM dns_served(%s)', (row['name'],)).fetchall()}
+                for row in connection.execute('SELECT * FROM dns_domains_list()').fetchall()]
+
+
+def domain_add(body):
+    """Add the domain {name, sites, ttl?}; the domain."""
+    if not isinstance(body, dict) or not isinstance(body.get('sites', False), bool):
+        raise Failure('a domain is an object of name, sites and ttl')
+    name, sites, ttl = check_domain(body.get('name')), body.get('sites', False), check_ttl(body.get('ttl'))
+    with database() as connection:
+        names = [row['name'] for row in connection.execute('SELECT * FROM dns_domains_list()').fetchall()]
+        if name in names:
+            raise Failure(f'the domain {name} exists', 4)
+        if len(names) >= DOMAINS_MAX:
+            raise Failure(f'the name server has {DOMAINS_MAX} domains')
+        connection.execute('CALL dns_domain_put(%s, %s, %s)', (name, sites, ttl))
+    return {'name': name, 'sites': sites, 'ttl': ttl}
+
+
+def domain_change(name, body):
+    """Change the sites and ttl of the domain; the domain."""
+    if not isinstance(body, dict) or not set(body) <= {'sites', 'ttl'} or \
+            not isinstance(body.get('sites', False), bool):
+        raise Failure('a change of a domain is an object of sites and ttl')
+    with database() as connection:
+        row = domain(connection, name)
+        sites, ttl = body.get('sites', row['sites']), check_ttl(body.get('ttl', row['ttl']))
+        connection.execute('CALL dns_domain_put(%s, %s, %s)', (name, sites, ttl))
+    return {'name': name, 'sites': sites, 'ttl': ttl}
+
+
+def domain_remove(name):
+    """Remove the domain with its secondaries and manual records."""
+    with database() as connection:
+        domain(connection, name)
+        connection.execute('CALL dns_domain_remove(%s)', (name,))
+    return {'name': name}
+
+
+def secondary_add(name, body):
+    """Add the secondary name server {nameserver, address} of the domain, or set its address; the secondary."""
+    if not isinstance(body, dict):
+        raise Failure('a secondary is an object of nameserver and address')
+    nameserver = body.get('nameserver')
+    if not isinstance(nameserver, str) or not vpnrouter.ZONE_NAME.match(nameserver.strip().lower().rstrip('.')):
+        raise Failure(f'{nameserver!r} is not a name server name')
+    nameserver = nameserver.strip().lower().rstrip('.')
+    try:
+        address = str(ipaddress.ip_address(str(body.get('address', '')).strip()))
+    except ValueError as exc:
+        raise Failure(f'{body.get("address")!r} is not an IP address') from exc
+    with database() as connection:
+        domain(connection, name)
+        others = [row for row in connection.execute('SELECT * FROM dns_secondaries_list()').fetchall()
+                  if row['domain'] == name and row['nameserver'] != nameserver]
+        if len(others) >= SECONDARIES_MAX:
+            raise Failure(f'the domain {name} has {SECONDARIES_MAX} secondaries')
+        connection.execute('CALL dns_secondary_put(%s, %s, %s)', (name, nameserver, address))
+    return {'domain': name, 'nameserver': nameserver, 'address': address}
+
+
+def secondary_remove(name, nameserver):
+    """Remove the secondary name server of the domain."""
+    with database() as connection:
+        domain(connection, name)
+        if not any(row['domain'] == name and row['nameserver'] == nameserver
+                   for row in connection.execute('SELECT * FROM dns_secondaries_list()').fetchall()):
+            raise Failure(f'no secondary {nameserver} of {name}', 3)
+        connection.execute('CALL dns_secondary_remove(%s, %s)', (name, nameserver))
+    return {'domain': name, 'nameserver': nameserver}
+
+
+def add(cfg, name, record):
+    """Add the manual record to the domain, or set the TTL of the same one; the record. A name in a domain below it
+    belongs to that domain."""
+    with database() as connection:
+        row = domain(connection, name)
+        record = check_record(name, record)
+        record['ttl'] = record['ttl'] or row['ttl'] or cfg['dns']['ttl']
+        zones = [item['name'] for item in connection.execute('SELECT * FROM dns_domains_list()').fetchall()]
+        owner = closest(zones, record['name'])
+        if owner != name:
+            raise Failure(f'{record["name"]} is in the domain {owner}')
+        records = [item for item in connection.execute('SELECT * FROM dns_records_list()').fetchall()
+                   if item['domain'] == name]
+        same = [item for item in records if (item['name'], item['type']) == (record['name'], record['type'])]
+        others = [item for item in records if item['name'] == record['name'] and item['type'] != record['type']]
+        if len(records) >= MANUAL_MAX and not same:
+            raise Failure(f'the domain {name} has {MANUAL_MAX} manual records')
+        if record['type'] == 'CNAME' and (others or [item for item in same if item['content'] != record['content']]):
            raise Failure(f'{record["name"]} has other records; a CNAME record must be its only record')
-        if any(row['type'] == 'CNAME' for row in others):
+        if any(item['type'] == 'CNAME' for item in others):
            raise Failure(f'{record["name"]} has a CNAME record, which must be its only record')
-        connection.execute('CALL dns_manual_put(%s, %s, %s, %s)',
-                           (record['name'], record['type'], record['content'], record['ttl']))
+        connection.execute('CALL dns_record_put(%s, %s, %s, %s, %s)',
+                           (name, record['name'], record['type'], record['content'], record['ttl']))
    return record


-def remove(cfg, name, kind, content):
-    """Remove the manual records of the name and type, only the one of the content when it is given."""
-    zone = cfg['dns']['zone'].strip()
-    full = absolute(zone, name)
+def remove(name, record_name, kind, content):
+    """Remove the manual records of the name and type in the domain, only the one of the content when it is given."""
+    full = absolute(name, record_name)
    with database() as connection:
-        found = [row for row in connection.execute('SELECT * FROM dns_manual_list()').fetchall()
-                 if (row['name'], row['type']) == (full, kind) and content in (None, row['content'])]
+        domain(connection, name)
+        found = [row for row in connection.execute('SELECT * FROM dns_records_list()').fetchall()
+                 if (row['domain'], row['name'], row['type']) == (name, full, kind)
+                 and content in (None, row['content'])]
        if not found:
            raise Failure(f'no {kind} record of {full}', 3)
-        connection.execute('CALL dns_manual_remove(%s, %s, %s)', (full, kind, content))
+        connection.execute('CALL dns_record_remove(%s, %s, %s, %s)', (name, full, kind, content))
    return {'name': full, 'type': kind, 'removed': len(found)}


-def served(zone):
-    """The records of the zone as the name server answers them, [] when it serves none."""
-    with database() as connection:
-        return connection.execute('SELECT * FROM dns_served(%s)', (zone,)).fetchall()
-
-
-def records(cfg, hosts, manual_records):
-    """The records of the zone besides its SOA, as (name, type, content, ttl): its NS, the A and AAAA records of
-    dns.addresses for the apex, the name server and each host name in the zone, and the manual records."""
+def records(cfg, row, zones, secondaries, hosts, manual_records):
+    """The records of the domain row besides its SOA, as (name, type, content, ttl): the NS of the domain and of the
+    domains directly below it, the A and AAAA records of dns.addresses for its apex, dns.nameserver when it is inside
+    and, with site records, each host name whose closest domain it is, the glue of the secondaries inside it, and its
+    manual records. secondaries maps a domain to its secondaries."""
    dns = cfg['dns']
-    zone, nameserver, ttl = dns['zone'].strip(), dns['nameserver'].strip(), dns['ttl']
+    zone, nameserver, ttl = row['name'], dns['nameserver'].strip(), row['ttl'] or dns['ttl']
    addresses = [ipaddress.ip_address(item.strip()) for item in dns['addresses'] if item.strip()]
-    found = [(zone, 'NS', nameserver, ttl)]
+    children = [name for name in zones
+                if name != zone and closest([item for item in zones if item != name], name) == zone]
+    found = [(name, 'NS', server, ttl) for name in [zone, *children]
+             for server in [nameserver, *(item['nameserver'] for item in secondaries.get(name, []))]]
    for name in dict.fromkeys([zone, *([nameserver] if in_zone(zone, nameserver) else []),
-                               *(host for host in hosts if in_zone(zone, host))]):
+                               *(host for host in hosts if row['sites'] and closest(zones, host) == zone)]):
        found += [(name, 'A' if address.version == 4 else 'AAAA', str(address), ttl) for address in addresses]
+    for item in (item for name in [zone, *children] for item in secondaries.get(name, [])):
+        if in_zone(zone, item['nameserver']) and item['nameserver'] != nameserver:
+            address = ipaddress.ip_address(item['address'])
+            found.append((item['nameserver'], 'A' if address.version == 4 else 'AAAA', str(address), ttl))
    taken = {(name, kind) for name, kind, _, _ in found}
-    found += [(row['name'], row['type'], row['content'], row['ttl']) for row in manual_records
-              if (row['name'], row['type']) not in taken]
+    found += [(item['name'], item['type'], item['content'], item['ttl']) for item in manual_records
+              if (item['name'], item['type']) not in taken]
    return list(dict.fromkeys(found))


 def apply(cfg, hosts):
-    """Make the name server serve dns.zone with records(), or no zone while dns.enabled is false."""
+    """Make the name server the primary of every domain with records(), and of none while dns.enabled is false."""
    with database() as connection:
        if not cfg['dns']['enabled']:
-            connection.execute('CALL dns_clear()')
+            connection.execute('CALL dns_retain(%s::text[])', ([],))
            return
        dns = cfg['dns']
-        zone = dns['zone'].strip()
-        rows = records(cfg, hosts, connection.execute('SELECT * FROM dns_manual_list()').fetchall())
-        soa = f'{dns["nameserver"].strip()} hostmaster.{zone} {{serial}} {SOA_TIMES} {dns["ttl"]}'
-        connection.execute('CALL dns_apply(%s, %s, %s, %s, %s, %s, %s)',
-                           (zone, soa, dns['ttl'], [row[0] for row in rows], [row[1] for row in rows],
-                            [row[2] for row in rows], [row[3] for row in rows]))
+        domains = connection.execute('SELECT * FROM dns_domains_list()').fetchall()
+        zones = [row['name'] for row in domains]
+        secondaries, manual = {}, {}
+        for item in connection.execute('SELECT * FROM dns_secondaries_list()').fetchall():
+            secondaries.setdefault(item['domain'], []).append(item)
+        for item in connection.execute('SELECT * FROM dns_records_list()').fetchall():
+            manual.setdefault(item['domain'], []).append(item)
+        for row in domains:
+            zone, ttl = row['name'], row['ttl'] or dns['ttl']
+            rows = records(cfg, row, zones, secondaries, hosts, manual.get(zone, []))
+            soa = f'{dns["nameserver"].strip()} hostmaster.{zone} {{serial}} {SOA_TIMES} {ttl}'
+            connection.execute('CALL dns_apply(%s, %s, %s, %s::text[], %s::text[], %s::text[], %s::integer[], '
+                               '%s::text[])',
+                               (zone, soa, ttl, [item[0] for item in rows], [item[1] for item in rows],
+                                [item[2] for item in rows], [item[3] for item in rows],
+                                [item['address'] for item in secondaries.get(zone, [])]))
+        connection.execute('CALL dns_retain(%s::text[])', (zones,))


 def config_text(addresses):
-    """The settings of PowerDNS: the gpgsql backend on the database of the name server, and the addresses it answers
-    on."""
+    """The settings of PowerDNS: the gpgsql backend on the database of the name server, primary operation, and the
+    addresses it answers on."""
    password = DATABASE_SECRET.read_text(encoding='utf-8').strip()
    return '\n'.join([
        '# Written by vpn-router-setup from /etc/vpn-router/vpn-router.json; edits are overwritten.',
@@ -262,6 +394,7 @@ def config_text(addresses):
        f'gpgsql-dbname={DATABASE}',
        f'gpgsql-user={DATABASE}',
        f'gpgsql-password={password}',
+        'primary=yes',
        f'local-address={", ".join(addresses)}',
        'local-port=53',
        '',
@@ -722,7 +722,7 @@ def install_crls(connection):
    crls = {}
    for name, file in SWANCTL_CA_FILES.items():
        entry = authority(connection, name)
-        crls[name] = entry['crl'].public_bytes(serialization.Encoding.PEM) if entry and entry['crl'] else None
+        crls[name] = entry['crl'].public_bytes(serialization.Encoding.PEM) if entry and entry['crl'] is not None else None
        changed |= write(X509CRL_DIR / file, crls[name], 0o644) if crls[name] else remove(X509CRL_DIR / file)
    if crls['root'] and crls['p2s']:
        changed |= write(OPENVPN_CRL, crls['root'] + crls['p2s'], 0o644)
@@ -10,7 +10,7 @@ adding one file here. Nothing in the core has to be edited.

 A module may define any of:

-    EXTRA_P2S_DNS   str, added to the road-warrior pool 'dns' list
+    EXTRA_P2S_DNS   str, added to the 'dns' list of the IKEv2 address pool
    EXTRA_LOCAL_TS  str, added to 'local_ts' on both connections
    apply(ctx)      called once the system has been configured, to apply
                    platform-specific state. Must be idempotent. ctx is the
@@ -3,9 +3,9 @@
 No platform-specific configuration is currently required.

 The Azure platform resolver 168.63.129.16 is deliberately *not* advertised to
-road-warrior clients and *not* added to the traffic selectors. Clients are
-given the router itself as their DNS server, and the router forwards through
-its own systemd-resolved via the p2s-forwarder drop-in. That resolves
+IKEv2 clients and *not* added to the traffic selectors. Clients are
+given the router's addresses of p2s.dns_listen as their DNS servers, where dnsmasq
+forwards to the router's own systemd-resolved. That resolves
 Azure-internal names without routing the wireserver address through the tunnel
 and without a second resolver in the pool.
 """
@@ -2,7 +2,7 @@

 No platform-specific configuration is currently required.

-As on Azure, road-warrior clients are given the router itself as their DNS
+As on Azure, IKEv2 clients are given the router itself as their DNS
 server and the router forwards through its own systemd-resolved, so the
 metadata resolver does not belong in the pool or in the traffic selectors.
 """
@@ -65,16 +65,22 @@ import fcntl
 import grp
 import ipaddress
 import json
+import plistlib
 import pwd
 import re
 import subprocess
 import time
 import urllib.parse
+import uuid

 import ldap
 import ldap.filter
 import ldap.modlist
 import pyotp
+from cryptography import x509
+from cryptography.hazmat.primitives import hashes, serialization
+from cryptography.hazmat.primitives.asymmetric import ec, rsa
+from cryptography.hazmat.primitives.serialization import pkcs12

 import vpnrouter
 import vpnrouter_ldap
@@ -807,6 +813,80 @@ def profile(connection, name):
    return {'name': name, 'profile': text}


+def apple_profile(connection, name, password):
+    """The Apple configuration profile (.mobileconfig, unsigned) of the user's IKEv2 access: the root CA and
+    the P2S CA, the user's certificate and key as a PKCS#12 encrypted with the password, and the VPN.
+
+    The connection matches road-warrior.conf: the router's wan.local_fqdn as address and identity, the user name, a
+    DNS name of the certificate, as the local identity, the certificate over EAP-TLS, and AES-256, SHA2-256 and group 14
+    for IKE and ESP. With p2s.dns_domains, the device resolves those domains with the router's resolver. The PKCS#12 uses 3DES and SHA-1, the only encryption Apple's clients read; they ask for the
+    password when the profile is installed.
+    """
+    entry(connection, name)
+    if not isinstance(password, str) or not PASSWORD_MIN <= len(password) <= PASSWORD_MAX:
+        raise Failure(f'the password of the profile must have {PASSWORD_MIN} to {PASSWORD_MAX} characters', 2)
+    cfg = vpnrouter.load_config()
+    fqdn = cfg['wan']['local_fqdn'].strip()
+    if not cfg['p2s']['enabled'] or not fqdn:
+        raise Failure('IKEv2 access is not enabled', 2)
+    credentials = vpnrouter_pki.user_credentials(name)
+    if credentials is None:
+        raise Failure(f'user {name} has no certificate')
+    try:
+        chain = x509.load_pem_x509_certificates(vpnrouter_pki.bundle('p2s')['pem'].encode())
+    except vpnrouter_pki.Failure as failure:
+        raise Failure(str(failure), 4)
+    cert = x509.load_pem_x509_certificate(credentials[0])
+    key = serialization.load_pem_private_key(credentials[1], password=None)
+    encryption = (serialization.PrivateFormat.PKCS12.encryption_builder().kdf_rounds(2048)
+                  .key_cert_algorithm(pkcs12.PBES.PBESv1SHA1And3KeyTripleDESCBC).hmac_hash(hashes.SHA1())
+                  .build(password.encode()))
+    bundle = pkcs12.serialize_key_and_certificates(name.encode(), key, cert, None, encryption)
+    certificate_type = ('RSA' if isinstance(key, rsa.RSAPrivateKey)
+                        else 'ECDSA384' if isinstance(key, ec.EllipticCurvePrivateKey) and key.curve.key_size == 384
+                        else 'ECDSA256')
+    identifier = f'{".".join(reversed(fqdn.split(".")))}.vpn-router.{name}'
+    ids = {kind: str(uuid.uuid5(uuid.NAMESPACE_URL, f'{identifier}.{kind}')) for kind in ('profile', 'pkcs12', 'vpn')}
+    proposal = {'EncryptionAlgorithm': 'AES-256', 'IntegrityAlgorithm': 'SHA2-256', 'DiffieHellmanGroup': 14,
+                'LifeTimeInMinutes': 60}
+    payloads = [{'PayloadType': 'com.apple.security.root' if index == len(chain) - 1 else 'com.apple.security.pkcs1',
+                 'PayloadVersion': 1, 'PayloadIdentifier': f'{identifier}.ca{index}',
+                 'PayloadUUID': str(uuid.uuid5(uuid.NAMESPACE_URL, f'{identifier}.ca{index}')),
+                 'PayloadDisplayName': vpnrouter_pki.common_name(item),
+                 'PayloadContent': item.public_bytes(serialization.Encoding.DER)}
+                for index, item in enumerate(chain)]
+    payloads.append({'PayloadType': 'com.apple.security.pkcs12', 'PayloadVersion': 1,
+                     'PayloadIdentifier': f'{identifier}.pkcs12', 'PayloadUUID': ids['pkcs12'],
+                     'PayloadDisplayName': f'{name} ({fqdn})', 'PayloadContent': bundle})
+    # The router's resolver, which setup records, answers the names of p2s.dns_domains; the others stay with the device's.
+    try:
+        servers = json.loads(vpnrouter.WEB_STATE.read_text(encoding='utf-8'))['network']['client_dns']
+    except (OSError, ValueError, KeyError, TypeError):
+        servers = []
+    domains = [item.strip() for item in cfg['p2s']['dns_domains'] if item.strip()]
+    dns = {'DNS': {'ServerAddresses': servers, 'SupplementalMatchDomains': domains}} if servers and domains else {}
+    payloads.append({
+        **dns,
+        'PayloadType': 'com.apple.vpn.managed', 'PayloadVersion': 1, 'PayloadIdentifier': f'{identifier}.vpn',
+        'PayloadUUID': ids['vpn'], 'PayloadDisplayName': f'VPN Router {fqdn}', 'UserDefinedName': f'VPN Router {fqdn}',
+        'VPNType': 'IKEv2',
+        'IKEv2': {
+            'RemoteAddress': fqdn, 'RemoteIdentifier': fqdn, 'LocalIdentifier': name,
+            'AuthenticationMethod': 'Certificate', 'ExtendedAuthEnabled': 1, 'PayloadCertificateUUID': ids['pkcs12'],
+            'CertificateType': certificate_type,
+            'ServerCertificateIssuerCommonName': vpnrouter_pki.common_name(chain[0]), 'ServerCertificateCommonName': fqdn,
+            'IKESecurityAssociationParameters': {**proposal, 'LifeTimeInMinutes': 480},
+            'ChildSecurityAssociationParameters': proposal,
+            'EnablePFS': 0, 'DeadPeerDetectionRate': 'Medium', 'DisableMOBIKE': 0, 'DisableRedirect': 0,
+        },
+    })
+    document = {'PayloadType': 'Configuration', 'PayloadVersion': 1, 'PayloadIdentifier': identifier,
+                'PayloadUUID': ids['profile'], 'PayloadDisplayName': f'VPN Router {fqdn} ({name})',
+                'PayloadDescription': f'IKEv2 access of {name} to {fqdn}', 'PayloadRemovalDisallowed': False,
+                'PayloadContent': payloads}
+    return {'name': name, 'profile': plistlib.dumps(document).decode()}
+
+
 def group_dn(name):
    return f'cn={name},{vpnrouter_ldap.GROUPS}'

@@ -1,6 +1,7 @@
 #!/bin/sh
 # Wait until libpq is in the dynamic linker cache, where psycopg looks it up.
-# ExecStartPre= of vpn-router-web.service; TimeoutStartSec= of the unit bounds the wait.
+# ExecStartPre= of vpn-router-setup.service, vpn-router-web.service and vpn-router-metrics.service;
+# TimeoutStartSec= of the unit bounds the wait.

 reported=
 until ldconfig -p | grep -q '^[[:space:]]*libpq\.so\.5 '; do
@@ -29,7 +29,7 @@ Pages:
  /backup  the backup settings, the last run and the local archives: show, change and run
           now (see backup())
  /remote-access
-           the settings of IKEv2 road-warrior, OpenVPN and WireGuard access and whether each
+           the settings of IKEv2, OpenVPN and WireGuard access and whether each
           runs: show and change, applied by vpn-router-setup (see remote_access())
  /ca      the PKI: its settings, the root and issuing CAs, the certificates issued; change the
           settings, issue and revoke certificates, and take the certificate of an issuing CA
@@ -47,13 +47,16 @@ Pages:
  /metrics/history
           the metrics the metrics service keeps, for a view: hour, day, month or year (see
           metrics_history())
-  /logs    the last lines of the journal of the router's units and of the files web.log_files lists
+  /metrics/settings
+           the settings of the metrics service: show and change, applied by vpn-router-setup (see
+           metrics_settings())
+  /logs   the last lines of the journal of the router's units and of the files web.log_files lists
           (see logs())
  /sites   the web sites Caddy serves: the settings of sites, list, add, change and remove (see sites()),
           and the files of each: list, download, upload, extract a zip archive, create a folder, rename and
           remove (see Handler.site_files()); a member of a site's editors group may use the site's files
-  /dns     the name server of dns.zone: its settings, the records it serves, and the manual records: add and
-           remove (see dns())
+  /dns     the primary name server of the router's domains: its settings, and the domains: add, change and
+           remove, each with its secondaries, the records it serves, and its manual records (see dns())
  /postgresql
           the databases of each PostgreSQL cluster on the router with their sizes, as JSON (see
           postgresql_databases()); /config has the clusters' settings
@@ -62,7 +65,7 @@ Pages:
           loopback address, where Caddy passes the requests of the HTTPS site; POST /oidc/login counts
           towards the limit of /auth calls

-/status/full, /config, /metrics/history, /postgresql, /users, /service-accounts, /groups, /site-to-site, /backup, /remote-access, /ca, /logs, /sites, /dns, /shell and /account need an HS256 JWT in an Authorization: Bearer header signed
+/status/full, /config, /metrics/history, /metrics/settings, /postgresql, /users, /service-accounts, /groups, /site-to-site, /backup, /remote-access, /ca, /logs, /sites, /dns, /shell and /account need an HS256 JWT in an Authorization: Bearer header signed
 with vpnrouter_auth.WEB_KEY (see vpnrouter_auth.verify). A token of /auth names a user in sub;
 /account serves that user, and the other paths need a member of vpnrouter_users.ADMIN_GROUP. A
 token of vpn-router-token has the admin claim and names no user; it may call every path but
@@ -79,7 +82,7 @@ default, the overall status, the time and the client's address (its address as f
 below); standard also the package version, the installed version of vpn-router-manager
 (manager_version, null when it is not installed) and the number of active and other services; full
 whether each service runs, whether Docker is installed, how many of the site-to-site connections are established
-(site_to_site: connections and established, null when swanctl cannot be asked), and road-warrior (IPsec P2S), OpenVPN
+(site_to_site: connections and established, null when swanctl cannot be asked), and IKEv2, OpenVPN
 and WireGuard. No configuration data, key or connection name is shown, and no address but the client's.

 The service first initializes, without listening: it makes the signing key, the OpenID Provider's key
@@ -171,7 +174,7 @@ POSTGRESQL_SETTINGS = ('server_version', 'listen_addresses', 'port', 'max_connec
 #: The units whose journal /logs/journal shows, besides the whole journal: the package's own and the services it runs.
 JOURNAL_UNITS = ('vpn-router-setup', 'vpn-router-web', 'vpn-router-metrics', 'vpn-router-pki', 'vpn-router-backup',
                 'vpn-router-caddy', 'vpn-router-manager', 'caddy', 'slapd', 'nslcd', 'postgresql', 'strongswan',
-                 'wg-quick@wg0', 'openvpn-server@vpn-router', 'ssh')
+                 'wg-quick@wg0', 'openvpn-server@vpn-router', 'ssh', 'vpn-router-resolver', 'vpn-router-webdav', 'pdns')

 #: The most lines /logs answers, the number it answers without lines, and the most bytes it reads from the end of a file.
 LOG_LINES_MAX = 1000
@@ -184,7 +187,7 @@ BODY_LIMIT = 65536
 #: The settings of a site_to_site connection that /site-to-site adds and changes.
 CONNECTION_SETTINGS = ('addrs', 'id', 'cidrs', 'local_cidrs', 'local_id_mode', 'auth', 'psk', 'remote_ca')

-#: The sections of the remote access systems /remote-access changes: IKEv2 road-warrior, OpenVPN and WireGuard.
+#: The sections of the remote access systems /remote-access changes: IKEv2, OpenVPN and WireGuard.
 REMOTE_ACCESS = ('p2s', 'openvpn', 'wireguard')

 #: The HTTP status for each status of a vpnrouter_users.Failure; any other is 500.
@@ -490,7 +493,7 @@ def text_of(status):
        lines.append(f'Site to site: {"unknown" if established is None else established} of {connections} established')
    if 'p2s' in status:
        clients = status['p2s']['clients']
-        lines.append(f'Road-warrior (IPsec P2S): {"unknown" if clients is None else f"{clients} connected"}')
+        lines.append(f'IKEv2: {"unknown" if clients is None else f"{clients} connected"}')
    if 'openvpn' in status:
        clients = status['openvpn']['clients']
        lines.append(f'OpenVPN: {"unknown" if clients is None else f"{clients} connected"}')
@@ -565,7 +568,10 @@ def users(state, method, path, body):
      POST   /users/<name>/unlock     end a lockout after failed logins
      DELETE /users/<name>            remove the user and revoke the certificate
      GET    /users/<name>/profile    the OpenVPN client profile
-      POST   /users/<name>/otp        a new TOTP secret and its otpauth URI; nothing is stored
+      POST   /users/<name>/apple-profile
+                                      the Apple configuration profile of IKEv2 access: {"password"}, which
+                                      encrypts the user's key in it; {"name", "profile"}
+      POST   /users/<name>/otp       a new TOTP secret and its otpauth URI; nothing is stored
      PUT    /users/<name>/otp        store a TOTP secret: {"secret", "code"}, code a code of the secret
      DELETE /users/<name>/otp        remove the TOTP token
      DELETE /users/<name>/passkeys   remove all the user's passkeys
@@ -592,6 +598,8 @@ def users(state, method, path, body):
        ('POST', 3, 'unlock'): lambda connection: vpnrouter_users.unlock(connection, name),
        ('DELETE', 2, None): lambda connection: vpnrouter_users.remove(connection, name),
        ('GET', 3, 'profile'): lambda connection: vpnrouter_users.profile(connection, name),
+        ('POST', 3, 'apple-profile'): lambda connection: vpnrouter_users.apple_profile(connection, name,
+                                                                                       body.get('password')),
        ('POST', 3, 'otp'): lambda connection: vpnrouter_users.otp_new(connection, name),
        ('PUT', 3, 'otp'): lambda connection: vpnrouter_users.otp_enrol(connection, name, body.get('secret'), body.get('code')),
        ('DELETE', 3, 'otp'): lambda connection: vpnrouter_users.otp_remove(connection, name),
@@ -888,9 +896,10 @@ def backup(method, path, body):


 def wireguard_server(cfg, state):
-    """What a WireGuard peer's configuration needs of the router: {public_key, endpoint, allowed_ips}; public_key is
-    null before setup made the key pair, endpoint, <wan.local_fqdn>:<wireguard.listen_port>, null without a name, and
-    allowed_ips the networks reached through the tunnel, the router's local CIDRs and the WireGuard network."""
+    """What a WireGuard peer's configuration needs of the router: {public_key, endpoint, allowed_ips, dns}; public_key is
+    null before setup made the key pair, endpoint, <wan.local_fqdn>:<wireguard.listen_port>, null without a name,
+    allowed_ips the networks reached through the tunnel, the router's local CIDRs and the WireGuard network, and dns the
+    addresses of the remote access clients' resolver, [] while it does not run."""
    try:
        public_key = vpnrouter.WG_PUBLIC_KEY.read_text(encoding='utf-8').strip() or None
    except OSError:
@@ -901,8 +910,10 @@ def wireguard_server(cfg, state):
    allowed = [cidr for cidr in networks if isinstance(cidr, str)] if isinstance(networks, list) else []
    if address:
        allowed.append(str(ipaddress.ip_interface(address).network))
+    dns = section(state, 'network').get('client_dns')
    return {'public_key': public_key, 'endpoint': f'{fqdn}:{cfg["wireguard"]["listen_port"]}' if fqdn else None,
-            'allowed_ips': list(dict.fromkeys(allowed))}
+            'allowed_ips': list(dict.fromkeys(allowed)),
+            'dns': [address for address in dns if isinstance(address, str)] if isinstance(dns, list) else []}


 def remote_access(state, method, path, body):
@@ -1040,8 +1051,15 @@ def account(name, method, path, body):
      PUT  /account/passkeys   store the passkey: {"id", "credential", "label"?}, credential the browser's answer
      DELETE /account/passkeys/<id>
                               remove a passkey
+      POST   /account/profile  the user's OpenVPN client profile: {"current_password", "current_code"?}; {"name",
+                               "profile"}
+      POST   /account/apple-profile
+                               the user's Apple configuration profile of IKEv2 access:
+                               {"current_password", "current_code"?, "password"}, password encrypting the user's key in
+                               it; {"name", "profile"}

-    A change but the removal of a passkey needs the current password and, for an enrolled user, a current code; a wrong
+    A change but the removal of a passkey, and the profiles, need the current password and, for an enrolled user, a
+    current code; a wrong
    one is 403 and counts as a failed login. A password change revokes the user's refresh tokens.
    """
    if body == 'invalid' or (body is not None and not isinstance(body, dict)):
@@ -1050,12 +1068,14 @@ def account(name, method, path, body):
    route = (method, path.rstrip('/'))
    removing = method == 'DELETE' and path.startswith('/account/passkeys/') and len(path.strip('/').split('/')) == 3
    if not removing and route not in (('GET', '/account'), ('PUT', '/account/password'), ('POST', '/account/otp'),
-                                      ('PUT', '/account/otp'), ('POST', '/account/passkeys'), ('PUT', '/account/passkeys')):
+                                      ('PUT', '/account/otp'), ('POST', '/account/passkeys'), ('PUT', '/account/passkeys'),
+                                      ('POST', '/account/profile'), ('POST', '/account/apple-profile')):
        return 404, {'error': f'no route {method} {path}'}
    try:
        if route == ('PUT', '/account/password'):
            vpnrouter_users.check_password(body.get('password'))
-        if route in (('PUT', '/account/password'), ('PUT', '/account/otp'), ('POST', '/account/passkeys')):
+        if route in (('PUT', '/account/password'), ('PUT', '/account/otp'), ('POST', '/account/passkeys'),
+                     ('POST', '/account/profile'), ('POST', '/account/apple-profile')):
            vpnrouter_users.login(name, body.get('current_password'), body.get('current_code'))
        with vpnrouter_users.session() as connection:
            if route == ('GET', '/account'):
@@ -1065,6 +1085,10 @@ def account(name, method, path, body):
                document = vpnrouter_users.passwd(connection, name, body['password'])
            elif route == ('POST', '/account/otp'):
                document = vpnrouter_users.otp_new(connection, name)
+            elif route == ('POST', '/account/profile'):
+                document = vpnrouter_users.profile(connection, name)
+            elif route == ('POST', '/account/apple-profile'):
+                document = vpnrouter_users.apple_profile(connection, name, body.get('password'))
            elif route == ('POST', '/account/passkeys'):
                document = vpnrouter_passkeys.register_begin(connection, name)
            elif route == ('PUT', '/account/passkeys'):
@@ -1243,44 +1267,69 @@ def site_file_action(name, target, body):
 def dns(method, path, query, body):
    """Answer a /dns request with vpnrouter_dns: the HTTP status and the JSON document.

-      GET    /dns           {"settings", "installed", "running", "records", "manual", "problem"}: the dns section of the
-                            configuration, whether PowerDNS is installed and runs, the records the name server serves,
-                            the manual records, and why the records cannot be read, null when they can
+      GET    /dns           {"settings", "installed", "running", "domains", "problem"}: the dns section of the
+                            configuration, whether PowerDNS is installed and runs, the domains, each {"name", "sites",
+                            "ttl", "secondaries", "manual", "records"} with its secondaries {"nameserver", "address"},
+                            its manual records and the records the name server serves, and why the domains cannot be
+                            read, null when they can
      PUT    /dns           change any of the settings of the dns section
-      POST   /dns/records   add a manual record: {"name", "type", "content", "ttl"?}; name is relative to dns.zone, @
-                            for the zone itself, or absolute with a final dot; ttl is dns.ttl without it
-      DELETE /dns/records   remove the manual records of name= and type=, with content= only that one
+      POST   /dns/domains   add a domain: {"name", "sites"?, "ttl"?}; sites gives the host names of the enabled sites
+                            in it records; ttl is dns.ttl when null or absent; an existing name is 409
+      PUT    /dns/domains/<domain>
+                            change "sites" or "ttl" of the domain
+      DELETE /dns/domains/<domain>
+                            remove the domain with its secondaries and manual records
+      POST   /dns/domains/<domain>/secondaries
+                            add a secondary name server of the domain, or change its address: {"nameserver", "address"}
+      DELETE /dns/domains/<domain>/secondaries/<nameserver>
+                            remove the secondary name server
+      POST   /dns/domains/<domain>/records
+                            add a manual record: {"name", "type", "content", "ttl"?}; name is relative to the domain,
+                            @ for the domain itself, or absolute with a final dot; ttl is the domain's without it
+      DELETE /dns/domains/<domain>/records
+                            remove the manual records of name= and type=, with content= only that one

    A change is applied by restarting vpn-router-setup without waiting for it.
    """
    if body == 'invalid' or (body is not None and not isinstance(body, dict)):
        return 400, {'error': 'the body must be a JSON object'}
    body = body or {}
+    parts = path.strip('/').split('/')
+    route = (method, *parts[:2], *parts[3:4])
    try:
        cfg = vpnrouter.load_config()
-        if (method, path) == ('GET', '/dns'):
-            served, manual, problem = [], [], None
+        if route == ('GET', 'dns'):
+            domains, problem = [], None
            try:
-                manual = vpnrouter_dns.manual()
-                served = vpnrouter_dns.served(cfg['dns']['zone'].strip())
+                domains = vpnrouter_dns.listing()
            except vpnrouter_dns.DatabaseError as exc:
                problem = str(exc)
            return 200, {'settings': cfg['dns'], 'installed': vpnrouter_dns.PDNS_SERVER.exists(),
-                         'running': unit_state(vpnrouter_dns.UNIT) == 'active', 'records': served, 'manual': manual,
+                         'running': unit_state(vpnrouter_dns.UNIT) == 'active', 'domains': domains,
                         'problem': problem}
-        if (method, path) == ('PUT', '/dns'):
+        if route == ('PUT', 'dns'):
            changed = section_change('dns', body)
            return changed if isinstance(changed, tuple) else (200, {'settings': changed})
-        if (method, path) == ('POST', '/dns/records'):
-            document, code = vpnrouter_dns.add(cfg, body), 201
-        elif (method, path) == ('DELETE', '/dns/records'):
+        if route == ('POST', 'dns', 'domains') and len(parts) == 2:
+            document, code = vpnrouter_dns.domain_add(body), 201
+        elif route == ('PUT', 'dns', 'domains') and len(parts) == 3:
+            document, code = vpnrouter_dns.domain_change(parts[2], body), 200
+        elif route == ('DELETE', 'dns', 'domains') and len(parts) == 3:
+            document, code = vpnrouter_dns.domain_remove(parts[2]), 200
+        elif route == ('POST', 'dns', 'domains', 'secondaries') and len(parts) == 4:
+            document, code = vpnrouter_dns.secondary_add(parts[2], body), 201
+        elif route == ('DELETE', 'dns', 'domains', 'secondaries') and len(parts) == 5:
+            document, code = vpnrouter_dns.secondary_remove(parts[2], parts[4]), 200
+        elif route == ('POST', 'dns', 'domains', 'records') and len(parts) == 4:
+            document, code = vpnrouter_dns.add(cfg, parts[2], body), 201
+        elif route == ('DELETE', 'dns', 'domains', 'records') and len(parts) == 4:
            content = query.get('content', [None])[0]
-            document = vpnrouter_dns.remove(cfg, query.get('name', [''])[0], query.get('type', [''])[0], content)
+            document = vpnrouter_dns.remove(parts[2], query.get('name', [''])[0], query.get('type', [''])[0], content)
            code = 200
        else:
            return 404, {'error': f'no route {method} {path}'}
    except vpnrouter_dns.Failure as failure:
-        return (404 if failure.status == 3 else 400), {'error': str(failure)}
+        return {3: 404, 4: 409}.get(failure.status, 400), {'error': str(failure)}
    except vpnrouter_dns.DatabaseError as exc:
        return 500, {'error': str(exc)}
    except SystemExit as exc:
@@ -1305,6 +1354,39 @@ def metrics_history(view):
        return 500, {'error': str(exc.code)}


+def metrics_shown(settings):
+    """The metrics section as /metrics/settings shows it: its settings but otlp_password, with otlp_password_set."""
+    return {**{option: value for option, value in settings.items() if option != 'otlp_password'},
+            'otlp_password_set': bool(settings['otlp_password'])}
+
+
+def metrics_settings(method, body):
+    """Answer a /metrics/settings request: the HTTP status and the JSON document.
+
+      GET /metrics/settings  {"settings"}: the metrics section without otlp_password, with otlp_password_set
+      PUT /metrics/settings  change any of the settings of the metrics section; an empty or absent otlp_password keeps
+                             the current secret, and an empty otlp_username removes it
+
+    A change is applied by restarting vpn-router-setup without waiting for it.
+    """
+    if body == 'invalid' or (body is not None and not isinstance(body, dict)):
+        return 400, {'error': 'the body must be a JSON object'}
+    if method in ('GET', 'HEAD'):
+        try:
+            return 200, {'settings': metrics_shown(vpnrouter.load_config()['metrics'])}
+        except SystemExit as exc:
+            return 500, {'error': str(exc.code)}
+    if method != 'PUT':
+        return 404, {'error': f'no route {method} /metrics/settings'}
+    body = dict(body or {})
+    if not body.get('otlp_password'):
+        body.pop('otlp_password', None)
+    if body.get('otlp_username') == '':
+        body['otlp_password'] = ''
+    changed = section_change('metrics', body)
+    return changed if isinstance(changed, tuple) else (200, {'settings': metrics_shown(changed)})
+
+
 def changes_admins(connection, method, parts, body):
    """Whether a /users, /service-accounts or /groups request creates, renames to, changes or removes ADMIN_GROUP, or
    removes a member of it."""
@@ -1773,7 +1855,8 @@ class Handler(BaseHTTPRequestHandler):
        directory = next((name for name in ('users', 'service-accounts', 'groups', 'account', 'site-to-site', 'backup',
                                            'ca', 'shell', 'remote-access', 'logs', 'sites', 'dns')
                          if path == f'/{name}' or path.startswith(f'/{name}/')), None)
-        protected = path in ('/status/full', '/config', '/metrics/history', '/postgresql') or directory is not None
+        protected = path in ('/status/full', '/config', '/metrics/history', '/metrics/settings', '/postgresql') or \
+            directory is not None
        signing = path in ('/auth', '/auth/passkey', '/auth/passkey/complete', '/auth/refresh', '/auth/logout')
        oidc = (path == '/.well-known/openid-configuration' or path.startswith('/oidc/')) and \
            self.server.server_address[0] == vpnrouter_net.LOOPBACK
@@ -1815,6 +1898,9 @@ class Handler(BaseHTTPRequestHandler):
            query = urllib.parse.parse_qs(urllib.parse.urlsplit(self.path).query)
            code, document = metrics_history(query.get('range', ['hour'])[0])
            body, kind = json.dumps(document).encode() + b'\n', 'application/json'
+        elif path == '/metrics/settings':
+            code, document = metrics_settings(self.command, payload)
+            body, kind = json.dumps(document, indent=2).encode() + b'\n', 'application/json'
        elif directory == 'shell' and (path, self.command) == ('/shell', 'GET'):
            return self.shell(claims.get('sub'))
        elif directory == 'shell':
@@ -38,7 +38,8 @@
  },
  "p2s": {
    "enabled": false,
-    "address_pool": "172.16.0.0/24"
+    "address_pool": "172.16.0.0/24",
+    "dns_listen": "internal"
  },
  "wireguard": {
    "enabled": false,
@@ -88,7 +89,6 @@
  },
  "dns": {
    "enabled": false,
-    "zone": "",
    "nameserver": "",
    "addresses": [],
    "listen": "external",
@@ -1,48 +1,106 @@
-- The zone the router's name server (PowerDNS, gpgsql backend) answers for (vpnrouter_dns), in the vpn-router-dns
-- database, whose domains and records tables are PowerDNS's own schema.
+-- The domains the router's name server (PowerDNS, gpgsql backend) is the primary of (vpnrouter_dns), in the
+-- vpn-router-dns database, whose domains, records and domainmetadata tables are PowerDNS's own schema.
 -- The whole file runs as one transaction, serialized by an advisory lock, so that two processes can load it at once.

 SELECT pg_advisory_xact_lock(hashtext('vpn-router dns schema'));

-- A record an administrator added to the zone, besides those of the zone itself and of the sites.
-CREATE TABLE IF NOT EXISTS dns_manual_records (
+DROP TABLE IF EXISTS dns_manual_records;
+
+-- A domain the router serves as its primary name server; sites says whether the host names of the enabled sites in
+-- it get records, ttl is the TTL of its records, null for dns.ttl.
+CREATE TABLE IF NOT EXISTS dns_domains (
+    name text PRIMARY KEY,
+    sites boolean NOT NULL,
+    ttl integer
+);
+
+-- A secondary name server of a domain: its NS name and the address it transfers the domain from.
+CREATE TABLE IF NOT EXISTS dns_secondaries (
+    domain text NOT NULL REFERENCES dns_domains (name) ON DELETE CASCADE,
+    nameserver text NOT NULL,
+    address inet NOT NULL,
+    PRIMARY KEY (domain, nameserver)
+);
+
+-- A record an administrator added to a domain, besides those of the domain itself and of the sites.
+CREATE TABLE IF NOT EXISTS dns_records (
+    domain text NOT NULL REFERENCES dns_domains (name) ON DELETE CASCADE,
    name text NOT NULL,
    type text NOT NULL,
    content text NOT NULL,
    ttl integer NOT NULL,
-    PRIMARY KEY (name, type, content)
+    PRIMARY KEY (domain, name, type, content)
 );

-- The digest of the records last written to the zone and the serial of its SOA.
+-- The digest of the records last written to a zone and the serial of its SOA.
 CREATE TABLE IF NOT EXISTS dns_state (
    zone text PRIMARY KEY,
    digest text NOT NULL,
    serial bigint NOT NULL
 );

-CREATE OR REPLACE FUNCTION dns_manual_list()
-RETURNS TABLE (name text, type text, content text, ttl integer)
+CREATE OR REPLACE FUNCTION dns_domains_list()
+RETURNS TABLE (name text, sites boolean, ttl integer)
 LANGUAGE sql STABLE AS $$
-    SELECT name, type, content, ttl FROM dns_manual_records ORDER BY name, type, content;
+    SELECT name, sites, ttl FROM dns_domains ORDER BY name;
 $$;

-- Add the record, or set its TTL.
-CREATE OR REPLACE PROCEDURE dns_manual_put(p_name text, p_type text, p_content text, p_ttl integer)
+-- Add the domain, or set its sites and TTL.
+CREATE OR REPLACE PROCEDURE dns_domain_put(p_name text, p_sites boolean, p_ttl integer)
 LANGUAGE sql AS $$
-    INSERT INTO dns_manual_records VALUES (p_name, p_type, p_content, p_ttl)
-    ON CONFLICT (name, type, content) DO UPDATE SET ttl = p_ttl;
+    INSERT INTO dns_domains VALUES (p_name, p_sites, p_ttl)
+    ON CONFLICT (name) DO UPDATE SET sites = p_sites, ttl = p_ttl;
 $$;

-- Remove the records of the name and type, all of them without content.
-CREATE OR REPLACE PROCEDURE dns_manual_remove(p_name text, p_type text, p_content text)
+-- Remove the domain with its secondaries and records.
+CREATE OR REPLACE PROCEDURE dns_domain_remove(p_name text)
 LANGUAGE sql AS $$
-    DELETE FROM dns_manual_records WHERE name = p_name AND type = p_type AND (p_content IS NULL OR content = p_content);
+    DELETE FROM dns_domains WHERE name = p_name;
 $$;

-- Make the zone the only one served and give it the records, its SOA first, whose content has {serial} for the serial.
-- The serial grows, to at least the current Unix time, only when the records differ from those last written.
+CREATE OR REPLACE FUNCTION dns_secondaries_list()
+RETURNS TABLE (domain text, nameserver text, address text)
+LANGUAGE sql STABLE AS $$
+    SELECT domain, nameserver, host(address) FROM dns_secondaries ORDER BY domain, nameserver;
+$$;
+
+-- Add the secondary of the domain, or set its address.
+CREATE OR REPLACE PROCEDURE dns_secondary_put(p_domain text, p_nameserver text, p_address inet)
+LANGUAGE sql AS $$
+    INSERT INTO dns_secondaries VALUES (p_domain, p_nameserver, p_address)
+    ON CONFLICT (domain, nameserver) DO UPDATE SET address = p_address;
+$$;
+
+CREATE OR REPLACE PROCEDURE dns_secondary_remove(p_domain text, p_nameserver text)
+LANGUAGE sql AS $$
+    DELETE FROM dns_secondaries WHERE domain = p_domain AND nameserver = p_nameserver;
+$$;
+
+CREATE OR REPLACE FUNCTION dns_records_list()
+RETURNS TABLE (domain text, name text, type text, content text, ttl integer)
+LANGUAGE sql STABLE AS $$
+    SELECT domain, name, type, content, ttl FROM dns_records ORDER BY domain, name, type, content;
+$$;
+
+-- Add the record to the domain, or set its TTL.
+CREATE OR REPLACE PROCEDURE dns_record_put(p_domain text, p_name text, p_type text, p_content text, p_ttl integer)
+LANGUAGE sql AS $$
+    INSERT INTO dns_records VALUES (p_domain, p_name, p_type, p_content, p_ttl)
+    ON CONFLICT (domain, name, type, content) DO UPDATE SET ttl = p_ttl;
+$$;
+
+-- Remove the records of the name and type in the domain, all of them without content.
+CREATE OR REPLACE PROCEDURE dns_record_remove(p_domain text, p_name text, p_type text, p_content text)
+LANGUAGE sql AS $$
+    DELETE FROM dns_records
+    WHERE domain = p_domain AND name = p_name AND type = p_type AND (p_content IS NULL OR content = p_content);
+$$;
+
+-- Serve the zone as its primary and give it the records, its SOA first, whose content has {serial} for the serial,
+-- and the addresses of its secondaries, which are notified of its changes and may transfer it. The serial grows, to
+-- at least the current Unix time, only when the records differ from those last written.
 CREATE OR REPLACE PROCEDURE dns_apply(p_zone text, p_soa text, p_ttl integer, p_names text[], p_types text[],
-                                      p_contents text[], p_ttls integer[])
+                                      p_contents text[], p_ttls integer[], p_secondaries text[])
 LANGUAGE plpgsql AS $$
 DECLARE
    v_domain integer;
@@ -50,12 +108,17 @@ DECLARE
    v_digest text := md5(concat_ws('|', p_soa, p_ttl, array_to_string(p_names, ','), array_to_string(p_types, ','),
                                   array_to_string(p_contents, ','), array_to_string(p_ttls, ',')));
 BEGIN
-    DELETE FROM domains WHERE name <> p_zone;
-    DELETE FROM dns_state WHERE zone <> p_zone;
    SELECT id INTO v_domain FROM domains WHERE name = p_zone;
    IF v_domain IS NULL THEN
-        INSERT INTO domains (name, type) VALUES (p_zone, 'NATIVE') RETURNING id INTO v_domain;
-    ELSIF EXISTS (SELECT 1 FROM dns_state WHERE zone = p_zone AND digest = v_digest) THEN
+        INSERT INTO domains (name, type) VALUES (p_zone, 'MASTER') RETURNING id INTO v_domain;
+    ELSE
+        UPDATE domains SET type = 'MASTER' WHERE id = v_domain AND type <> 'MASTER';
+    END IF;
+    DELETE FROM domainmetadata WHERE domain_id = v_domain AND kind IN ('ALSO-NOTIFY', 'ALLOW-AXFR-FROM');
+    INSERT INTO domainmetadata (domain_id, kind, content)
+    SELECT v_domain, kind, address FROM unnest(p_secondaries) AS address,
+                                        unnest(ARRAY['ALSO-NOTIFY', 'ALLOW-AXFR-FROM']) AS kind;
+    IF EXISTS (SELECT 1 FROM dns_state WHERE zone = p_zone AND digest = v_digest) THEN
        RETURN;
    END IF;
    SELECT greatest(coalesce(max(serial) + 1, 1), extract(epoch FROM now())::bigint) INTO v_serial
@@ -71,11 +134,11 @@ BEGIN
 END;
 $$;

-- Serve no zone.
-CREATE OR REPLACE PROCEDURE dns_clear()
+-- Serve only the zones of the list, none for an empty one.
+CREATE OR REPLACE PROCEDURE dns_retain(p_zones text[])
 LANGUAGE sql AS $$
-    DELETE FROM domains;
-    DELETE FROM dns_state;
+    DELETE FROM domains WHERE name <> ALL (p_zones);
+    DELETE FROM dns_state WHERE zone <> ALL (p_zones);
 $$;

 -- The records of the zone as they are served.
@@ -0,0 +1,11 @@
+# Written by vpn-router-setup from /etc/vpn-router/vpn-router.json; edits are overwritten.
+# The resolver of the remote access clients, on the addresses of p2s.dns_listen, forwarding to systemd-resolved's stub.
+{% for address in p2s_resolver_addrs -%}
+listen-address={{ address }}
+{% endfor -%}
+bind-interfaces
+no-resolv
+server=127.0.0.53
+domain-needed
+no-hosts
+cache-size=1000
@@ -1,4 +0,0 @@
-[Resolve]
-{% for address in local_addr_list -%}
-DNSStubListenerExtra={{ address }}
-{% endfor -%}
@@ -39,5 +39,9 @@ pools {
  rw-pool {
    addrs = {{ p2s_address_pool }}
    dns   = {{ p2s_dns }}
+{%- if p2s_dns_domains %}
+    # INTERNAL_DNS_DOMAIN (RFC 8598): the domains the clients resolve with the DNS servers above.
+    25    = {{ p2s_dns_domains | join(', ') }}
+{%- endif %}
  }
 }
@@ -45,7 +45,7 @@ variable "vm_size" {
 }

 variable "local_fqdn" {
-  description = "FQDN of the router, used as the road-warrior/IKE identity and, when dns_zone_id is set, as the name of the A record created for it."
+  description = "FQDN of the router, used as the IKE identity and, when dns_zone_id is set, as the name of the A record created for it."
  type        = string
 }

@@ -89,13 +89,13 @@ variable "psk" {
 }

 variable "p2s_enabled" {
-  description = "Enable road-warrior (P2S) access."
+  description = "Enable IKEv2 access."
  type        = bool
  default     = false
 }

 variable "p2s_address_pool" {
-  description = "CIDR block assigned to road-warrior clients."
+  description = "CIDR block assigned to IKEv2 clients."
  type        = string
  default     = ""
 }
@@ -37,7 +37,7 @@ variable "machine_type" {
 }

 variable "local_fqdn" {
-  description = "FQDN of the router, used as the road-warrior/IKE identity and, when dns_managed_zone is set, as the name of the A record created for it."
+  description = "FQDN of the router, used as the IKE identity and, when dns_managed_zone is set, as the name of the A record created for it."
  type        = string
 }

@@ -86,13 +86,13 @@ variable "psk" {
 }

 variable "p2s_enabled" {
-  description = "Enable road-warrior (P2S) access."
+  description = "Enable IKEv2 access."
  type        = bool
  default     = false
 }

 variable "p2s_address_pool" {
-  description = "CIDR block assigned to road-warrior clients."
+  description = "CIDR block assigned to IKEv2 clients."
  type        = string
  default     = ""
 }
Author	SHA1	Message	Date
slawek	5303779559	feature: the web service shows and changes the settings of the metrics service at /metrics/settings, and OpenVPN starts on a new router, as setup installs CRLs that revoke nothing. Release / release (push) Failing after 14m34s Details	2026-10-28 22:31:27 +01:00
slawek	2dc4db440f	fix: OpenVPN starts on a new router, as setup installs CRLs that revoke nothing. Release / release (push) Failing after 15m31s Details	2026-10-28 22:00:37 +01:00
slawek	45cea95728	fix: vpn-router-setup runs on a new installation once libpq can be found. Release / release (push) Failing after 14m15s Details	2026-10-28 21:41:52 +01:00
slawek	dd2dfaaf2b	fix: the router's IPsec remote access is called IKEv2 instead of road-warrior. Release / release (push) Successful in 53s Details	2026-10-27 08:46:36 +01:00
slawek	1697e1aa38	fix: the name server is the primary of any number of domains, each with secondary name servers and a switch for the records of the sites. Release / release (push) Successful in 13s Details	2026-10-26 21:26:47 +01:00
slawek	57e8bbcffe	feature: road-warrior clients resolve the domains of the new setting p2s.dns_domains with the router's resolver. Release / release (push) Successful in 14s Details	2026-10-26 20:58:33 +01:00
slawek	9ca8fce14e	fix: a VPN user downloads the own OpenVPN client profile through /account, with the current password and code. Release / release (push) Successful in 22s Details	2026-10-26 20:43:33 +01:00
slawek	74c24d7bc6	feature: the web service gives Apple VPN profiles that set up IKEv2 road-warrior access on macOS, iOS and iPadOS. Release / release (push) Successful in 14s Details	2026-10-26 20:37:58 +01:00
slawek	770332728e	fix: WireGuard clients may use the router's DNS resolver, which runs while WireGuard does, and /remote-access names its addresses for their configuration. Release / release (push) Successful in 14s Details	2026-10-26 18:33:03 +01:00
slawek	e14bbe2ba1	fix: dnsmasq answers the remote access clients' DNS queries, so they no longer get the router's own host name with all its addresses from systemd-resolved. Release / release (push) Successful in 13s Details	2026-10-26 16:53:42 +01:00
slawek	dabe4e8365	fix: the remote access clients' resolver answers on the internal address by default, chosen by p2s.dns_listen, so the name server can take port 53 of the external addresses. Release / release (push) Successful in 36s Details	2026-10-26 16:11:08 +01:00