treewide: add journald-remote

base.nix

@@ -0,0 +1,200 @@
+{ config, lib, pkgs, inputs, values, ... }:
+
+{
+  imports = [
+    ./users
+    ./modules/snakeoil-certs.nix
+  ];
+
+  networking.domain = "pvv.ntnu.no";
+  networking.useDHCP = false;
+  # networking.search = [ "pvv.ntnu.no" "pvv.org" ];
+  # networking.nameservers = lib.mkDefault [ "129.241.0.200" "129.241.0.201" ];
+  # networking.tempAddresses = lib.mkDefault "disabled";
+  # networking.defaultGateway = values.hosts.gateway;
+
+  systemd.network.enable = true;
+
+  services.resolved = {
+    enable = lib.mkDefault true;
+    dnssec = "false"; # Supposdly this keeps breaking and the default is to allow downgrades anyways...
+  };
+
+  time.timeZone = "Europe/Oslo";
+
+  i18n.defaultLocale = "en_US.UTF-8";
+  console = {
+    font = "Lat2-Terminus16";
+    keyMap = "no";
+  };
+
+  system.autoUpgrade = {
+    enable = true;
+    flake = "git+https://git.pvv.ntnu.no/Drift/pvv-nixos-config.git";
+    flags = [
+      "--update-input" "nixpkgs"
+      "--update-input" "nixpkgs-unstable"
+      "--no-write-lock-file"
+    ];
+  };
+  nix.gc.automatic = true;
+  nix.gc.options = "--delete-older-than 2d";
+
+  nix.settings.experimental-features = [ "nix-command" "flakes" ];
+
+  /* This makes commandline tools like
+  ** nix run nixpkgs#hello
+  ** and nix-shell -p hello
+  ** use the same channel the system
+  ** was built with
+  */
+  nix.registry = {
+    nixpkgs.flake = inputs.nixpkgs;
+  };
+  nix.nixPath = [ "nixpkgs=${inputs.nixpkgs}" ];
+
+  environment.systemPackages = with pkgs; [
+    file
+    git
+    gnupg
+    htop
+    nano
+    ripgrep
+    rsync
+    screen
+    tmux
+    vim
+    wget
+
+    kitty.terminfo
+  ];
+
+  programs.zsh.enable = true;
+
+  users.groups."drift".name = "drift";
+
+  # Trusted users on the nix builder machines
+  users.groups."nix-builder-users".name = "nix-builder-users";
+
+  # Let's not thermal throttle
+  services.thermald.enable = lib.mkIf (lib.all (x: x) [
+      (config.nixpkgs.system == "x86_64-linux")
+      (!config.boot.isContainer or false)
+    ]) true;
+
+  services.openssh = {
+    enable = true;
+    extraConfig = ''
+      PubkeyAcceptedAlgorithms=+ssh-rsa
+      Match Group wheel
+        PasswordAuthentication no
+      Match All
+    '';
+    settings.PermitRootLogin = "yes";
+  };
+
+  # nginx return 444 for all nonexistent virtualhosts
+
+  systemd.services.nginx.after = [ "generate-snakeoil-certs.service" ];
+
+  environment.snakeoil-certs = lib.mkIf config.services.nginx.enable {
+    "/etc/certs/nginx" = {
+      owner = "nginx";
+      group = "nginx";
+    };
+  };
+
+  services.nginx = {
+    recommendedTlsSettings = true;
+    recommendedProxySettings = true;
+    recommendedOptimisation = true;
+    recommendedGzipSettings = true;
+
+    appendConfig = ''
+      pcre_jit on;
+      worker_processes auto;
+      worker_rlimit_nofile 100000;
+    '';
+    eventsConfig = ''
+      worker_connections 2048;
+      use epoll;
+      multi_accept on;
+    '';
+  };
+
+  systemd.services.nginx.serviceConfig = lib.mkIf config.services.nginx.enable {
+    LimitNOFILE = 65536;
+  };
+
+  services.nginx.virtualHosts."_" = lib.mkIf config.services.nginx.enable {
+    sslCertificate = "/etc/certs/nginx.crt";
+    sslCertificateKey = "/etc/certs/nginx.key";
+    addSSL = true;
+    extraConfig = "return 444;";
+  };
+
+  # source: https://github.com/logrotate/logrotate/blob/main/examples/logrotate.service
+  systemd.services.logrotate = {
+    documentation = [ "man:logrotate(8)" "man:logrotate.conf(5)" ];
+    unitConfig.RequiresMountsFor = "/var/log";
+    serviceConfig = {
+      Nice = 19;
+      IOSchedulingClass = "best-effort";
+      IOSchedulingPriority = 7;
+
+      ReadWritePaths = [ "/var/log" ];
+
+      AmbientCapabilities = [ "" ];
+      CapabilityBoundingSet = [ "" ];
+      DeviceAllow = [ "" ];
+      LockPersonality = true;
+      MemoryDenyWriteExecute = true;
+      NoNewPrivileges = true; # disable for third party rotate scripts
+      PrivateDevices = true;
+      PrivateNetwork = true; # disable for mail delivery
+      PrivateTmp = true;
+      ProtectClock = true;
+      ProtectControlGroups = true;
+      ProtectHome = true; # disable for userdir logs
+      ProtectHostname = true;
+      ProtectKernelLogs = true;
+      ProtectKernelModules = true;
+      ProtectKernelTunables = true;
+      ProtectProc = "invisible";
+      ProtectSystem = "full";
+      RestrictNamespaces = true;
+      RestrictRealtime = true;
+      RestrictSUIDSGID = true; # disable for creating setgid directories
+      SocketBindDeny = [ "any" ];
+      SystemCallArchitectures = "native";
+      SystemCallFilter = [
+        "@system-service"
+      ];
+    };
+  };
+
+  services.journald.upload = {
+    enable =  values.services.logcollector.ipv4;
+    settings.Upload = {
+      URL = "https://logcollector.pvv.ntnu.no:19532";
+      ServerKeyFile = "-";
+      ServerCertificateFile = "-";
+      TrustedCertificateFile = "-";
+    };
+  };
+
+  networking.firewall.allowedTCPPorts = lib.mkIf config.services.nginx.enable [ 80 443 ];
+
+  security.acme = {
+    acceptTerms = true;
+    defaults.email = "drift@pvv.ntnu.no";
+  };
+  # Let's not spam LetsEncrypt in `nixos-rebuild build-vm` mode:
+  virtualisation.vmVariant = {
+    security.acme.defaults.server = "https://127.0.0.1";
+    security.acme.preliminarySelfsigned = true;
+
+    users.users.root.initialPassword = "root";
+  };
+
+}

base/default.nix

@@ -1,60 +0,0 @@
-{ pkgs, lib, ... }:
-
-{
-  imports = [
-    ../users
-    ../modules/snakeoil-certs.nix
-
-    ./networking.nix
-    ./nix.nix
-
-    ./services/acme.nix
-    ./services/auto-upgrade.nix
-    ./services/irqbalance.nix
-    ./services/logrotate.nix
-    ./services/nginx.nix
-    ./services/openssh.nix
-    ./services/postfix.nix
-    ./services/smartd.nix
-    ./services/thermald.nix
-  ];
-
-  boot.tmp.cleanOnBoot = lib.mkDefault true;
-
-  time.timeZone = "Europe/Oslo";
-
-  i18n.defaultLocale = "en_US.UTF-8";
-  console = {
-    font = "Lat2-Terminus16";
-    keyMap = "no";
-  };
-
-  environment.systemPackages = with pkgs; [
-    file
-    git
-    gnupg
-    htop
-    nano
-    ripgrep
-    rsync
-    screen
-    tmux
-    vim
-    wget
-
-    kitty.terminfo
-  ];
-
-  programs.zsh.enable = true;
-
-  security.sudo.execWheelOnly = true;
-  security.sudo.extraConfig = ''
-    Defaults lecture = never
-  '';
-
-  users.groups."drift".name = "drift";
-
-  # Trusted users on the nix builder machines
-  users.groups."nix-builder-users".name = "nix-builder-users";
-}
-

base/networking.nix

@@ -1,16 +0,0 @@
-{ lib, values, ... }:
-{
-  networking.domain = "pvv.ntnu.no";
-  networking.useDHCP = false;
-  # networking.search = [ "pvv.ntnu.no" "pvv.org" ];
-  # networking.nameservers = lib.mkDefault [ "129.241.0.200" "129.241.0.201" ];
-  # networking.tempAddresses = lib.mkDefault "disabled";
-  # networking.defaultGateway = values.hosts.gateway;
-
-  systemd.network.enable = true;
-
-  services.resolved = {
-    enable = lib.mkDefault true;
-    dnssec = "false"; # Supposdly this keeps breaking and the default is to allow downgrades anyways...
-  };
-}

base/nix.nix

@@ -1,30 +0,0 @@
-{ inputs, ... }:
-{
-  nix = {
-    gc = {
-      automatic = true;
-      options = "--delete-older-than 2d";
-    };
-
-    settings = {
-      allow-dirty = true;
-      auto-optimise-store = true;
-      builders-use-substitutes = true;
-      experimental-features = [ "nix-command" "flakes" ];
-      log-lines = 50;
-      use-xdg-base-directories = true;
-    };
-
-    /* This makes commandline tools like
-    ** nix run nixpkgs#hello
-    ** and nix-shell -p hello
-    ** use the same channel the system
-    ** was built with
-    */
-    registry = {
-      "nixpkgs".flake = inputs.nixpkgs;
-      "pvv-nix".flake = inputs.self;
-    };
-    nixPath = [ "nixpkgs=${inputs.nixpkgs}" ];
-  };
-}

base/services/acme.nix

@@ -1,15 +0,0 @@
-{ ... }:
-{
-  security.acme = {
-    acceptTerms = true;
-    defaults.email = "drift@pvv.ntnu.no";
-  };
-
-  # Let's not spam LetsEncrypt in `nixos-rebuild build-vm` mode:
-  virtualisation.vmVariant = {
-    security.acme.defaults.server = "https://127.0.0.1";
-    security.acme.preliminarySelfsigned = true;
-
-    users.users.root.initialPassword = "root";
-  };
-}

base/services/auto-upgrade.nix

@@ -1,12 +0,0 @@
-{ ... }:
-{
-  system.autoUpgrade = {
-    enable = true;
-    flake = "git+https://git.pvv.ntnu.no/Drift/pvv-nixos-config.git";
-    flags = [
-      "--update-input" "nixpkgs"
-      "--update-input" "nixpkgs-unstable"
-      "--no-write-lock-file"
-    ];
-  };
-}

base/services/irqbalance.nix

@@ -1,4 +0,0 @@
-{ ... }:
-{
-  services.irqbalance.enable = true;
-}

base/services/logrotate.nix

@@ -1,42 +0,0 @@
-{ ... }:
-{
-  # source: https://github.com/logrotate/logrotate/blob/main/examples/logrotate.service
-  systemd.services.logrotate = {
-    documentation = [ "man:logrotate(8)" "man:logrotate.conf(5)" ];
-    unitConfig.RequiresMountsFor = "/var/log";
-    serviceConfig = {
-      Nice = 19;
-      IOSchedulingClass = "best-effort";
-      IOSchedulingPriority = 7;
-
-      ReadWritePaths = [ "/var/log" ];
-
-      AmbientCapabilities = [ "" ];
-      CapabilityBoundingSet = [ "" ];
-      DeviceAllow = [ "" ];
-      LockPersonality = true;
-      MemoryDenyWriteExecute = true;
-      NoNewPrivileges = true; # disable for third party rotate scripts
-      PrivateDevices = true;
-      PrivateNetwork = true; # disable for mail delivery
-      PrivateTmp = true;
-      ProtectClock = true;
-      ProtectControlGroups = true;
-      ProtectHome = true; # disable for userdir logs
-      ProtectHostname = true;
-      ProtectKernelLogs = true;
-      ProtectKernelModules = true;
-      ProtectKernelTunables = true;
-      ProtectProc = "invisible";
-      ProtectSystem = "full";
-      RestrictNamespaces = true;
-      RestrictRealtime = true;
-      RestrictSUIDSGID = true; # disable for creating setgid directories
-      SocketBindDeny = [ "any" ];
-      SystemCallArchitectures = "native";
-      SystemCallFilter = [
-        "@system-service"
-      ];
-    };
-  };
-}

base/services/nginx.nix

@@ -1,44 +0,0 @@
-{ config, lib, ... }:
-{
-  # nginx return 444 for all nonexistent virtualhosts
-
-  systemd.services.nginx.after = [ "generate-snakeoil-certs.service" ];
-
-  environment.snakeoil-certs = lib.mkIf config.services.nginx.enable {
-    "/etc/certs/nginx" = {
-      owner = "nginx";
-      group = "nginx";
-    };
-  };
-
-  networking.firewall.allowedTCPPorts = lib.mkIf config.services.nginx.enable [ 80 443 ];
-
-  services.nginx = {
-    recommendedTlsSettings = true;
-    recommendedProxySettings = true;
-    recommendedOptimisation = true;
-    recommendedGzipSettings = true;
-
-    appendConfig = ''
-      pcre_jit on;
-      worker_processes auto;
-      worker_rlimit_nofile 100000;
-    '';
-    eventsConfig = ''
-      worker_connections 2048;
-      use epoll;
-      multi_accept on;
-    '';
-  };
-
-  systemd.services.nginx.serviceConfig = lib.mkIf config.services.nginx.enable {
-    LimitNOFILE = 65536;
-  };
-
-  services.nginx.virtualHosts."_" = lib.mkIf config.services.nginx.enable {
-    sslCertificate = "/etc/certs/nginx.crt";
-    sslCertificateKey = "/etc/certs/nginx.key";
-    addSSL = true;
-    extraConfig = "return 444;";
-  };
-}

base/services/openssh.nix

@@ -1,14 +0,0 @@
-{ ... }:
-{
-  services.openssh = {
-    enable = true;
-    startWhenNeeded = true;
-    extraConfig = ''
-      PubkeyAcceptedAlgorithms=+ssh-rsa
-      Match Group wheel
-        PasswordAuthentication no
-      Match All
-    '';
-    settings.PermitRootLogin = "yes";
-  };
-}

base/services/postfix.nix

@@ -1,23 +0,0 @@
-{ config, pkgs, lib, ... }:
-let
-  cfg = config.services.postfix;
-in
-{
-  services.postfix = {
-    enable = true;
-
-    hostname = "${config.networking.hostName}.pvv.ntnu.no";
-    domain = "pvv.ntnu.no";
-
-    relayHost = "smtp.pvv.ntnu.no";
-    relayPort = 465;
-
-    config = {
-      smtp_tls_wrappermode = "yes";
-      smtp_tls_security_level = "encrypt";
-    };
-
-    # Nothing should be delivered to this machine
-    destination = [ ];
-  };
-}

base/services/smartd.nix

@@ -1,8 +0,0 @@
-{ config, pkgs, lib, ... }:
-{
-  services.smartd.enable = lib.mkDefault true;
-
-  environment.systemPackages = lib.optionals config.services.smartd.enable (with pkgs; [
-    smartmontools
-  ]);
-}

base/services/thermald.nix

@@ -1,8 +0,0 @@
-{ config, lib, ... }:
-{
-  # Let's not thermal throttle
-  services.thermald.enable = lib.mkIf (lib.all (x: x) [
-      (config.nixpkgs.system == "x86_64-linux")
-      (!config.boot.isContainer or false)
-    ]) true;
-}

hosts/bekkalokk/configuration.nix

@@ -3,7 +3,7 @@
   imports = [
     ./hardware-configuration.nix
 
-    ../../base
+    ../../base.nix
     ../../misc/metrics-exporters.nix
 
     ./services/gitea/default.nix
@@ -32,8 +32,6 @@
     address = with values.hosts.bekkalokk; [ (ipv4 + "/25") (ipv6 + "/64") ];
   };
 
-  services.btrfs.autoScrub.enable = true;
-
   # Do not change, even during upgrades.
   # See https://search.nixos.org/options?show=system.stateVersion
   system.stateVersion = "22.11";

hosts/bicep/configuration.nix

@@ -3,7 +3,7 @@
   imports = [
     ./hardware-configuration.nix
 
-    ../../base
+    ../../base.nix
     ../../misc/metrics-exporters.nix
     ./services/nginx
 

hosts/bicep/services/matrix/mjolnir.nix

@@ -11,7 +11,7 @@
   services.mjolnir = {
     enable = true;
     pantalaimon.enable = false;
-    homeserverUrl = "https://matrix.pvv.ntnu.no";
+    homeserverUrl = "http://127.0.0.1:8008";
     accessTokenFile = config.sops.secrets."matrix/mjolnir/access_token".path;
     managementRoom = "!gsdeCoWjvYRBrzuiRq:pvv.ntnu.no";
     protectedRooms = map (a: "https://matrix.to/#/${a}") [

hosts/bicep/services/matrix/synapse.nix

@@ -157,18 +157,6 @@ in {
       '';
     };
   }
-  {
-    locations."/_synapse/admin" = {
-      proxyPass = "http://$synapse_backend";
-      extraConfig = ''
-        allow 127.0.0.1;
-        allow ::1;
-        allow ${values.hosts.bicep.ipv4};
-        allow ${values.hosts.bicep.ipv6};
-        deny all;
-      '';
-    };
-  }
   {
     locations = let
       connectionInfo = w: matrix-lib.workerConnectionResource "metrics" w;

hosts/bicep/services/mysql.nix

@@ -1,7 +1,4 @@
 { pkgs, lib, config, values, ... }:
-let
-  backupDir = "/var/lib/mysql/backups";
-in
 {
   sops.secrets."mysql/password" = {
     owner = "mysql";
@@ -39,6 +36,11 @@ in
     }];
   };
 
+  services.mysqlBackup = {
+    enable = true;
+    location = "/var/lib/mysql/backups";
+  };
+
   networking.firewall.allowedTCPPorts = [ 3306 ];
 
   systemd.services.mysql.serviceConfig = {
@@ -48,58 +50,4 @@ in
       values.ipv6-space
     ];
   };
-
-  # NOTE: instead of having the upstream nixpkgs postgres backup unit trigger
-  #       another unit, it was easier to just make one ourselves
-  systemd.services."backup-mysql" = {
-    description = "Backup MySQL data";
-    requires = [ "mysql.service" ];
-
-    path = [
-      pkgs.coreutils
-      pkgs.rsync
-      pkgs.gzip
-      config.services.mysql.package
-    ];
-
-    script = let
-      rotations = 10;
-      # rsyncTarget = "root@isvegg.pvv.ntnu.no:/mnt/backup1/bicep/mysql";
-      rsyncTarget = "/data/backup/mysql";
-    in ''
-      set -eo pipefail
-
-      mysqldump --all-databases | gzip -c -9 --rsyncable > "${backupDir}/$(date --iso-8601)-dump.sql.gz"
-
-      while [ $(ls -1 "${backupDir}" | wc -l) -gt ${toString rotations} ]; do
-        rm $(find "${backupDir}" -type f -printf '%T+ %p\n' | sort | head -n 1 | cut -d' ' -f2)
-      done
-
-      rsync -avz --delete "${backupDir}" '${rsyncTarget}'
-    '';
-
-    serviceConfig = {
-      Type = "oneshot";
-      User = "mysql";
-      Group = "mysql";
-      UMask = "0077";
-
-      Nice = 19;
-      IOSchedulingClass = "best-effort";
-      IOSchedulingPriority = 7;
-
-      ReadWritePaths = [
-        backupDir
-        "/data/backup/mysql" # NOTE: should not be part of this option once rsyncTarget is remote
-      ];
-    };
-
-    startAt = "*-*-* 02:15:00";
-  };
-
-  systemd.tmpfiles.settings."10-mysql-backup".${backupDir}.d = {
-    user = "mysql";
-    group = "mysql";
-    mode = "700";
-  };
 }

hosts/bicep/services/postgres.nix

@@ -1,7 +1,4 @@
-{ config, pkgs, lib, ... }:
+{ config, pkgs, ... }:
-let
-  backupDir = "/var/lib/postgresql/backups";
-in
 {
   services.postgresql = {
     enable = true;
@@ -93,57 +90,9 @@ in
   networking.firewall.allowedTCPPorts = [ 5432 ];
   networking.firewall.allowedUDPPorts = [ 5432 ];
 
-  # NOTE: instead of having the upstream nixpkgs postgres backup unit trigger
+  services.postgresqlBackup = {
-  #       another unit, it was easier to just make one ourselves
+    enable = true;
-  systemd.services."backup-postgresql" = {
+    location = "/var/lib/postgres/backups";
-    description = "Backup PostgreSQL data";
+    backupAll = true;
-    requires = [ "postgresql.service" ];
-
-    path = [
-      pkgs.coreutils
-      pkgs.rsync
-      pkgs.gzip
-      config.services.postgresql.package
-    ];
-
-    script = let
-      rotations = 10;
-      # rsyncTarget = "root@isvegg.pvv.ntnu.no:/mnt/backup1/bicep/postgresql";
-      rsyncTarget = "/data/backup/postgresql";
-    in ''
-      set -eo pipefail
-
-      pg_dumpall -U postgres | gzip -c -9 --rsyncable > "${backupDir}/$(date --iso-8601)-dump.sql.gz"
-
-      while [ $(ls -1 "${backupDir}" | wc -l) -gt ${toString rotations} ]; do
-        rm $(find "${backupDir}" -type f -printf '%T+ %p\n' | sort | head -n 1 | cut -d' ' -f2)
-      done
-
-      rsync -avz --delete "${backupDir}" '${rsyncTarget}'
-    '';
-
-    serviceConfig = {
-      Type = "oneshot";
-      User = "postgres";
-      Group = "postgres";
-      UMask = "0077";
-
-      Nice = 19;
-      IOSchedulingClass = "best-effort";
-      IOSchedulingPriority = 7;
-
-      ReadWritePaths = [
-        backupDir
-        "/data/backup/postgresql" # NOTE: should not be part of this option once rsyncTarget is remote
-      ];
-    };
-
-    startAt = "*-*-* 01:15:00";
-  };
-
-  systemd.tmpfiles.settings."10-postgresql-backup".${backupDir}.d = {
-    user = "postgres";
-    group = "postgres";
-    mode = "700";
   };
 }

hosts/bob/configuration.nix

@@ -3,7 +3,7 @@
   imports = [
       # Include the results of the hardware scan.
       ./hardware-configuration.nix
-      ../../base
+      ../../base.nix
       ../../misc/metrics-exporters.nix
       ./disks.nix
 

hosts/brzeczyszczykiewicz/configuration.nix

@@ -3,7 +3,7 @@
   imports = [
       # Include the results of the hardware scan.
       ./hardware-configuration.nix
-      ../../base
+      ../../base.nix
       ../../misc/metrics-exporters.nix
 
       ./services/grzegorz.nix

hosts/buskerud/configuration.nix

@@ -2,7 +2,7 @@
 {
   imports = [
     ./hardware-configuration.nix
-    ../../base
+    ../../base.nix
     ../../misc/metrics-exporters.nix
 
     ./services/libvirt.nix

hosts/georg/configuration.nix

@@ -3,7 +3,7 @@
   imports = [
       # Include the results of the hardware scan.
       ./hardware-configuration.nix
-      ../../base
+      ../../base.nix
       ../../misc/metrics-exporters.nix
 
       ../../modules/grzegorz.nix

hosts/ildkule/configuration.nix

@@ -3,7 +3,7 @@
   imports = [
       # Include the results of the hardware scan.
       ./hardware-configuration.nix
-      ../../base
+      ../../base.nix
       ../../misc/metrics-exporters.nix
 
       ./services/monitoring

hosts/ildkule/services/journald-remote.nix

@@ -0,0 +1,18 @@
+{ ... }:
+{
+  services.journald.remote = {
+    enable = true;
+    settings.Remote = {
+      # ServerKeyFile = "/run/credentials/systemd-journald-remote.service/key.pem";
+      # ServerCertificateFile = "/run/credentials/systemd-journald-remote.service/.pem";
+      ServerKeyFile = "/etc/journald-remote-certs/key.pem";
+      ServerCertificateFile = "/etc/journald-remote-certs/cert.pem";
+      TrustedCertificateFile = "-";
+    };
+  };
+
+  # systemd.services.systemd-journal-remote.serviceConfig.LoadCredential = [
+  #   "key.pem:/etc/journald-remote-certs/key.pem"
+  #   "cert.pem:/etc/journald-remote-certs/cert.pem"
+  # ];
+}

hosts/shark/configuration.nix

@@ -3,7 +3,7 @@
   imports = [
       # Include the results of the hardware scan.
       ./hardware-configuration.nix
-      ../../base
+      ../../base.nix
       ../../misc/metrics-exporters.nix
     ];
 

values.nix

@@ -21,6 +21,9 @@ in rec {
       ipv4 = pvv-ipv4 213;
       ipv6 = pvv-ipv6 213;
     };
+    log-collector = {
+      inherit (hosts.ildkule) ipv4 ipv6;
+    };
   };
 
   hosts = {