commit 355a9fa0408983446be73ce20d7535eea1319c4b · pyrox.dev/nixpkgs

+182 -123
nixos/modules/services/networking/jool.nix
···

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           TemporaryFileSystem = [ "/" ];

     

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           BindReadOnlyPaths = [

     

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             builtins.storeDir

     

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             "/run/current-system/kernel-modules"

     

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             "/run/booted-system/kernel-modules"

     

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           ];

     

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           # Give capabilities to load the module and configure it

     
···

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         configFormat = pkgs.formats.json {};

     

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         mkDefaultAttrs = lib.mapAttrs (n: v: lib.mkDefault v);

     

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         # Generate the config file of instance `name`

     

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         nat64Conf = name:

     

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           configFormat.generate "jool-nat64-${name}.conf"

     

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             (cfg.nat64.${name} // { instance = name; });

     

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         siitConf = name:

     

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           configFormat.generate "jool-siit-${name}.conf"

     

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             (cfg.siit.${name} // { instance = name; });

     

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       +
       

     

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         # NAT64 config type

     

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         nat64Options = lib.types.submodule {

     

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           # The format is plain JSON

     

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           freeformType = configFormat.type;

     

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           # Some options with a default value

     

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           options.framework = lib.mkOption {

     

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             type = lib.types.enum [ "netfilter" "iptables" ];

     

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             default = "netfilter";

     

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             description = lib.mdDoc ''

     

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               The framework to use for attaching Jool's translation to the exist

     

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               kernel packet processing rules. See the

     

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               [documentation](https://nicmx.github.io/Jool/en/intro-jool.html#design)

     

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               for the differences between the two options.

     

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             '';

     

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           };

     

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       +
           options.global.pool6 = lib.mkOption {

     

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             type = lib.types.strMatching "[[:xdigit:]:]+/[[:digit:]]+"

     

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               // { description = "Network prefix in CIDR notation"; };

     

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             default = "64:ff9b::/96";

     

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             description = lib.mdDoc ''

     

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               The prefix used for embedding IPv4 into IPv6 addresses.

     

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               Defaults to the well-known NAT64 prefix, defined by

     

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               [RFC 6052](https://datatracker.ietf.org/doc/html/rfc6052).

     

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             '';

     

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           };

     

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         };

     

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         # SIIT config type

     

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         siitOptions = lib.types.submodule {

     

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           # The format is, again, plain JSON

     

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           freeformType = configFormat.type;

     

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           # Some options with a default value

     

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           options = { inherit (nat64Options.getSubOptions []) framework; };

     

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         };

     

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         defaultNat64 = {

     

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           instance = "default";

     

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           framework = "netfilter";

     

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           global.pool6 = "64:ff9b::/96";

     

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         makeNat64Unit = name: opts: {

     

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           "jool-nat64-${name}" = {

     

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             description = "Jool, NAT64 setup of instance ${name}";

     

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             documentation = [ "https://nicmx.github.io/Jool/en/documentation.html" ];

     

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             after = [ "network.target" ];

     

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             wantedBy = [ "multi-user.target" ];

     

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             serviceConfig = {

     

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               Type = "oneshot";

     

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               RemainAfterExit = true;

     

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               ExecStartPre = "${pkgs.kmod}/bin/modprobe jool";

     

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               ExecStart    = "${jool-cli}/bin/jool file handle ${nat64Conf name}";

     

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               ExecStop     = "${jool-cli}/bin/jool -f ${nat64Conf name} instance remove";

     

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             } // hardening;

     

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           };

     

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         };

     

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         defaultSiit = {

     

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           instance = "default";

     

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           framework = "netfilter";

     

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       +
       

     

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         makeSiitUnit = name: opts: {

     

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           "jool-siit-${name}" = {

     

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             description = "Jool, SIIT setup of instance ${name}";

     

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             documentation = [ "https://nicmx.github.io/Jool/en/documentation.html" ];

     

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             after = [ "network.target" ];

     

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             wantedBy = [ "multi-user.target" ];

     

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             serviceConfig = {

     

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               Type = "oneshot";

     

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               RemainAfterExit = true;

     

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               ExecStartPre = "${pkgs.kmod}/bin/modprobe jool_siit";

     

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               ExecStart    = "${jool-cli}/bin/jool_siit file handle ${siitConf name}";

     

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               ExecStop     = "${jool-cli}/bin/jool_siit -f ${siitConf name} instance remove";

     

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             } // hardening;

     

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           };

     

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         };

     

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         nat64Conf = configFormat.generate "jool-nat64.conf" cfg.nat64.config;

     

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         siitConf  = configFormat.generate "jool-siit.conf" cfg.siit.config;

     

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         checkNat64 = name: _: ''

     

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           printf 'Validating Jool configuration for NAT64 instance "${name}"... '

     

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           jool file check ${nat64Conf name}

     

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           printf 'Ok.\n'; touch "$out"

     

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         '';

     

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         checkSiit = name: _: ''

     

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           printf 'Validating Jool configuration for SIIT instance "${name}"... '

     

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           jool_siit file check ${siitConf name}

     

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           printf 'Ok.\n'; touch "$out"

     

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         '';

     

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       in

     

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       {

     

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         ###### interface

     

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       -
       

     

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         options = {

     

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           networking.jool.enable = lib.mkOption {

     

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             type = lib.types.bool;

     
···

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               NAT64, analogous to the IPv4 NAPT. Refer to the upstream

     

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               [documentation](https://nicmx.github.io/Jool/en/intro-xlat.html) for

     

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               the supported modes of translation and how to configure them.

     

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       +
       

     

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               Enabling this option will install the Jool kernel module and the

     

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               command line tools for controlling it.

     

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             '';

     

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           };

     

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           networking.jool.nat64.enable = lib.mkEnableOption (lib.mdDoc "a NAT64 instance of Jool.");

     

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           networking.jool.nat64.config = lib.mkOption {

     

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             type = configFormat.type;

     

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             default = defaultNat64;

     

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           networking.jool.nat64 = lib.mkOption {

     

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             type = lib.types.attrsOf nat64Options;

     

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             default = { };

     

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             example = lib.literalExpression ''

     

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               {

     

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                 # custom NAT64 prefix

     

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                 global.pool6 = "2001:db8:64::/96";

     

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                 default = {

     

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                   # custom NAT64 prefix

     

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                   global.pool6 = "2001:db8:64::/96";

     

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                 # Port forwarding

     

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                 bib = [

     

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                   { # SSH 192.0.2.16 → 2001:db8:a::1

     

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                     "protocol"     = "TCP";

     

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                     "ipv4 address" = "192.0.2.16#22";

     

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                     "ipv6 address" = "2001:db8:a::1#22";

     

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                   }

     

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                   { # DNS (TCP) 192.0.2.16 → 2001:db8:a::2

     

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                     "protocol"     = "TCP";

     

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                     "ipv4 address" = "192.0.2.16#53";

     

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                     "ipv6 address" = "2001:db8:a::2#53";

     

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                   }

     

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                   { # DNS (UDP) 192.0.2.16 → 2001:db8:a::2

     

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                     "protocol" = "UDP";

     

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                     "ipv4 address" = "192.0.2.16#53";

     

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                     "ipv6 address" = "2001:db8:a::2#53";

     

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                   }

     

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                 ];

     

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                   # Port forwarding

     

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                   bib = [

     

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                     { # SSH 192.0.2.16 → 2001:db8:a::1

     

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                       "protocol"     = "TCP";

     

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                       "ipv4 address" = "192.0.2.16#22";

     

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                       "ipv6 address" = "2001:db8:a::1#22";

     

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                     }

     

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                     { # DNS (TCP) 192.0.2.16 → 2001:db8:a::2

     

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                       "protocol"     = "TCP";

     

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                       "ipv4 address" = "192.0.2.16#53";

     

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                       "ipv6 address" = "2001:db8:a::2#53";

     

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                     }

     

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                     { # DNS (UDP) 192.0.2.16 → 2001:db8:a::2

     

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                       "protocol" = "UDP";

     

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                       "ipv4 address" = "192.0.2.16#53";

     

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                       "ipv6 address" = "2001:db8:a::2#53";

     

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                     }

     

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                   ];

     

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                 pool4 = [

     

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                   # Ports for dynamic translation

     

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                   { protocol =  "TCP";  prefix = "192.0.2.16/32"; "port range" = "40001-65535"; }

     

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                   { protocol =  "UDP";  prefix = "192.0.2.16/32"; "port range" = "40001-65535"; }

     

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                   { protocol = "ICMP";  prefix = "192.0.2.16/32"; "port range" = "40001-65535"; }

     

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                   pool4 = [

     

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                     # Port ranges for dynamic translation

     

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                     { protocol =  "TCP";  prefix = "192.0.2.16/32"; "port range" = "40001-65535"; }

     

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                     { protocol =  "UDP";  prefix = "192.0.2.16/32"; "port range" = "40001-65535"; }

     

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                     { protocol = "ICMP";  prefix = "192.0.2.16/32"; "port range" = "40001-65535"; }

     

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                   # Ports for static BIB entries

     

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                   { protocol =  "TCP";  prefix = "192.0.2.16/32"; "port range" = "22"; }

     

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                   { protocol =  "UDP";  prefix = "192.0.2.16/32"; "port range" = "53"; }

     

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                 ];

     

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       +
                     # Ports for static BIB entries

     

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       +
                     { protocol =  "TCP";  prefix = "192.0.2.16/32"; "port range" = "22"; }

     

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       +
                     { protocol =  "UDP";  prefix = "192.0.2.16/32"; "port range" = "53"; }

     

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                   ];

     

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       +
                 };

     

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               }

     

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             '';

     

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             description = lib.mdDoc ''

     

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       -
               The configuration of a stateful NAT64 instance of Jool managed through

     

       112
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       -
               NixOS. See https://nicmx.github.io/Jool/en/config-atomic.html for the

     

       113
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       -
               available options.

     

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       +
               Definitions of NAT64 instances of Jool.

     

       186
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       +
               See the

     

       187
       187
       +
               [documentation](https://nicmx.github.io/Jool/en/config-atomic.html) for

     

       188
       188
       +
               the available options. Also check out the

     

       189
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       +
               [tutorial](https://nicmx.github.io/Jool/en/run-nat64.html) for an

     

       190
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       +
               introduction to NAT64 and how to troubleshoot the setup.

     

       191
       191
       +
       

     

       192
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       +
               The attribute name defines the name of the instance, with the main one

     

       193
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       +
               being `default`: this can be accessed from the command line without

     

       194
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       +
               specifying the name with `-i`.

     

       114
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       115
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               ::: {.note}

     

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               Existing or more instances created manually will not interfere with the

     

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       -
               NixOS instance, provided the respective `pool4` addresses and port

     

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       -
               ranges are not overlapping.

     

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       +
               Instances created imperatively from the command line will not interfere

     

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       +
               with the NixOS instances, provided the respective `pool4` addresses and

     

       199
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       +
               port ranges are not overlapping.

     

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               :::

     

       120
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               ::: {.warning}

     

       122
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       -
               Changes to the NixOS instance performed via `jool instance nixos-nat64`

     

       123
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       -
               are applied correctly but will be lost after restarting

     

       124
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       -
               `jool-nat64.service`.

     

       203
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       +
               Changes to an instance performed via `jool -i <name>` are applied

     

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       +
               correctly but will be lost after restarting the respective

     

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       +
               `jool-nat64-<name>.service`.

     

       125
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               :::

     

       126
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             '';

     

       127
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           };

     

       128
       209
        
       

     

       129
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       -
           networking.jool.siit.enable = lib.mkEnableOption (lib.mdDoc "a SIIT instance of Jool.");

     

       130
       130
       -
           networking.jool.siit.config = lib.mkOption {

     

       131
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       -
             type = configFormat.type;

     

       132
       132
       -
             default = defaultSiit;

     

       210
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       +
           networking.jool.siit = lib.mkOption {

     

       211
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       +
             type = lib.types.attrsOf siitOptions;

     

       212
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       +
             default = { };

     

       133
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             example = lib.literalExpression ''

     

       134
       214
        
               {

     

       135
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       -
                 # Maps any IPv4 address x.y.z.t to 2001:db8::x.y.z.t and v.v.

     

       136
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       -
                 pool6 = "2001:db8::/96";

     

       215
       215
       +
                 default = {

     

       216
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       +
                   # Maps any IPv4 address x.y.z.t to 2001:db8::x.y.z.t and v.v.

     

       217
       217
       +
                   global.pool6 = "2001:db8::/96";

     

       137
       218
        
       

     

       138
       138
       -
                 # Explicit address mappings

     

       139
       139
       -
                 eamt = [

     

       140
       140
       -
                   # 2001:db8:1:: ←→ 192.0.2.0

     

       141
       141
       -
                   { "ipv6 prefix": "2001:db8:1::/128", "ipv4 prefix": "192.0.2.0" }

     

       142
       142
       -
                   # 2001:db8:1::x ←→ 198.51.100.x

     

       143
       143
       -
                   { "ipv6 prefix": "2001:db8:2::/120", "ipv4 prefix": "198.51.100.0/24" }

     

       144
       144
       -
                 ]

     

       219
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       +
                   # Explicit address mappings

     

       220
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       +
                   eamt = [

     

       221
       221
       +
                     # 2001:db8:1:: ←→ 192.0.2.0

     

       222
       222
       +
                     { "ipv6 prefix" = "2001:db8:1::/128"; "ipv4 prefix" = "192.0.2.0"; }

     

       223
       223
       +
                     # 2001:db8:1::x ←→ 198.51.100.x

     

       224
       224
       +
                     { "ipv6 prefix" = "2001:db8:2::/120"; "ipv4 prefix" = "198.51.100.0/24"; }

     

       225
       225
       +
                   ];

     

       226
       226
       +
                 };

     

       145
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               }

     

       146
       228
        
             '';

     

       147
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             description = lib.mdDoc ''

     

       148
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       -
               The configuration of a SIIT instance of Jool managed through

     

       149
       149
       -
               NixOS. See https://nicmx.github.io/Jool/en/config-atomic.html for the

     

       150
       150
       -
               available options.

     

       230
       230
       +
               Definitions of SIIT instances of Jool.

     

       231
       231
       +
               See the

     

       232
       232
       +
               [documentation](https://nicmx.github.io/Jool/en/config-atomic.html) for

     

       233
       233
       +
               the available options. Also check out the

     

       234
       234
       +
               [tutorial](https://nicmx.github.io/Jool/en/run-vanilla.html) for an

     

       235
       235
       +
               introduction to SIIT and how to troubleshoot the setup.

     

       236
       236
       +
       

     

       237
       237
       +
               The attribute name defines the name of the instance, with the main one

     

       238
       238
       +
               being `default`: this can be accessed from the command line without

     

       239
       239
       +
               specifying the name with `-i`.

     

       151
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       152
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               ::: {.note}

     

       153
       153
       -
               Existing or more instances created manually will not interfere with the

     

       154
       154
       -
               NixOS instance, provided the respective `EAMT` address mappings are not

     

       155
       155
       -
               overlapping.

     

       242
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       +
               Instances created imperatively from the command line will not interfere

     

       243
       243
       +
               with the NixOS instances, provided the respective EAMT addresses and

     

       244
       244
       +
               port ranges are not overlapping.

     

       156
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               :::

     

       157
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       158
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               ::: {.warning}

     

       159
       159
       -
               Changes to the NixOS instance performed via `jool instance nixos-siit`

     

       160
       160
       -
               are applied correctly but will be lost after restarting

     

       161
       161
       -
               `jool-siit.service`.

     

       248
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       +
               Changes to an instance performed via `jool -i <name>` are applied

     

       249
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       +
               correctly but will be lost after restarting the respective

     

       250
       250
       +
               `jool-siit-<name>.service`.

     

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               :::

     

       163
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             '';

     

       164
       253
        
           };

     

       165
       254
        
       

     

       166
       255
        
         };

     

       167
       256
        
       

     

       168
       168
       -
         ###### implementation

     

       169
       169
       -
       

     

       170
       257
        
         config = lib.mkIf cfg.enable {

     

       171
       171
       -
           environment.systemPackages = [ jool-cli ];

     

       258
       258
       +
           # Install kernel module and cli tools

     

       172
       259
        
           boot.extraModulePackages = [ jool ];

     

       173
       173
       -
       

     

       174
       174
       -
           systemd.services.jool-nat64 = lib.mkIf cfg.nat64.enable {

     

       175
       175
       -
             description = "Jool, NAT64 setup";

     

       176
       176
       -
             documentation = [ "https://nicmx.github.io/Jool/en/documentation.html" ];

     

       177
       177
       -
             after = [ "network.target" ];

     

       178
       178
       -
             wantedBy = [ "multi-user.target" ];

     

       179
       179
       -
             reloadIfChanged = true;

     

       180
       180
       -
             serviceConfig = {

     

       181
       181
       -
               Type = "oneshot";

     

       182
       182
       -
               RemainAfterExit = true;

     

       183
       183
       -
               ExecStartPre = "${pkgs.kmod}/bin/modprobe jool";

     

       184
       184
       -
               ExecStart    = "${jool-cli}/bin/jool file handle ${nat64Conf}";

     

       185
       185
       -
               ExecStop     = "${jool-cli}/bin/jool -f ${nat64Conf} instance remove";

     

       186
       186
       -
             } // hardening;

     

       187
       187
       -
           };

     

       188
       188
       -
       

     

       189
       189
       -
           systemd.services.jool-siit = lib.mkIf cfg.siit.enable {

     

       190
       190
       -
             description = "Jool, SIIT setup";

     

       191
       191
       -
             documentation = [ "https://nicmx.github.io/Jool/en/documentation.html" ];

     

       192
       192
       -
             after = [ "network.target" ];

     

       193
       193
       -
             wantedBy = [ "multi-user.target" ];

     

       194
       194
       -
             reloadIfChanged = true;

     

       195
       195
       -
             serviceConfig = {

     

       196
       196
       -
               Type = "oneshot";

     

       197
       197
       -
               RemainAfterExit = true;

     

       198
       198
       -
               ExecStartPre = "${pkgs.kmod}/bin/modprobe jool_siit";

     

       199
       199
       -
               ExecStart    = "${jool-cli}/bin/jool_siit file handle ${siitConf}";

     

       200
       200
       -
               ExecStop     = "${jool-cli}/bin/jool_siit -f ${siitConf} instance remove";

     

       201
       201
       -
             } // hardening;

     

       202
       202
       -
           };

     

       203
       203
       -
       

     

       204
       204
       -
           system.checks = lib.singleton (pkgs.runCommand "jool-validated" {

     

       205
       205
       -
             nativeBuildInputs = [ pkgs.buildPackages.jool-cli ];

     

       206
       206
       -
             preferLocalBuild = true;

     

       207
       207
       -
           } ''

     

       208
       208
       -
             printf 'Validating Jool configuration... '

     

       209
       209
       -
             ${lib.optionalString cfg.siit.enable "jool_siit file check ${siitConf}"}

     

       210
       210
       -
             ${lib.optionalString cfg.nat64.enable "jool file check ${nat64Conf}"}

     

       211
       211
       -
             printf 'ok\n'

     

       212
       212
       -
             touch "$out"

     

       213
       213
       -
           '');

     

       260
       260
       +
           environment.systemPackages = [ jool-cli ];

     

       214
       261
        
       

     

       215
       215
       -
           networking.jool.nat64.config = mkDefaultAttrs defaultNat64;

     

       216
       216
       -
           networking.jool.siit.config  = mkDefaultAttrs defaultSiit;

     

       262
       262
       +
           # Install services for each instance

     

       263
       263
       +
           systemd.services = lib.mkMerge

     

       264
       264
       +
             (lib.mapAttrsToList makeNat64Unit cfg.nat64 ++

     

       265
       265
       +
              lib.mapAttrsToList makeSiitUnit cfg.siit);

     

       217
       266
        
       

     

       267
       267
       +
           # Check the configuration of each instance

     

       268
       268
       +
           system.checks = lib.optional (cfg.nat64 != {} || cfg.siit != {})

     

       269
       269
       +
             (pkgs.runCommand "jool-validated"

     

       270
       270
       +
               {

     

       271
       271
       +
                 nativeBuildInputs = with pkgs.buildPackages; [ jool-cli ];

     

       272
       272
       +
                 preferLocalBuild = true;

     

       273
       273
       +
               }

     

       274
       274
       +
               (lib.concatStrings

     

       275
       275
       +
                 (lib.mapAttrsToList checkNat64 cfg.nat64 ++

     

       276
       276
       +
                  lib.mapAttrsToList checkSiit cfg.siit)));

     

       218
       277
        
         };

     

       219
       278
        
       

     

       220
       279
        
         meta.maintainers = with lib.maintainers; [ rnhmjoj ];