commit 16a9328410d90f39fd1e6dbab76b16c3d1f8ddce · pyrox.dev/nixpkgs

nixos/tests/all-tests.nix

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         cinnamon = handleTest ./cinnamon.nix {};

     

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         cinnamon-wayland = handleTest ./cinnamon-wayland.nix {};

     

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         cjdns = handleTest ./cjdns.nix {};

     

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         clatd = handleTest ./clatd.nix {};

     

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         clickhouse = handleTest ./clickhouse.nix {};

     

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         cloud-init = handleTest ./cloud-init.nix {};

     

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         cloud-init-hostname = handleTest ./cloud-init-hostname.nix {};

+189

nixos/tests/clatd.nix

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       # This test verifies that we can ping an IPv4-only server from an IPv6-only

     

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       # client via a NAT64 router using CLAT on the client. The hosts and networks

     

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       # are configured as follows:

     

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       #

     

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       #        +------

     

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       # Client | clat    Address: 192.0.0.1/32  (configured via clatd)

     

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       #        |         Route:   default

     

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       #        |

     

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       #        | eth1    Address: 2001:db8::2/64

     

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       #        |  |      Route:   default via 2001:db8::1

     

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       #        +--|---

     

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       #           | VLAN 3

     

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       #        +--|---

     

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       #        | eth2    Address: 2001:db8::1/64

     

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       # Router |

     

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       #        | nat64   Address: 64:ff9b::1/128

     

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       #        |         Route:   64:ff9b::/96

     

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       #        |         Address: 192.0.2.0/32

     

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       #        |         Route:   192.0.2.0/24

     

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       #        |

     

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       #        | eth1    Address: 100.64.0.1/24

     

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       #        +--|---

     

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       #           | VLAN 2

     

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       #        +--|---

     

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       # Server | eth1    Address: 100.64.0.2/24

     

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       #        |         Route:   192.0.2.0/24 via 100.64.0.1

     

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       #        +------

     

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       import ./make-test-python.nix ({ pkgs, lib, ... }:

     

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       {

     

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         name = "clatd";

     

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         meta = with pkgs.lib.maintainers; {

     

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           maintainers = [ hax404 ];

     

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         };

     

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       +
       

     

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         nodes = {

     

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           # The server is configured with static IPv4 addresses. RFC 6052 Section 3.1

     

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           # disallows the mapping of non-global IPv4 addresses like RFC 1918 into the

     

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           # Well-Known Prefix 64:ff9b::/96. TAYGA also does not allow the mapping of

     

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           # documentation space (RFC 5737). To circumvent this, 100.64.0.2/24 from

     

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           # RFC 6589 (Carrier Grade NAT) is used here.

     

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           # To reach the IPv4 address pool of the NAT64 gateway, there is a static

     

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           # route configured. In normal cases, where the router would also source NAT

     

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           # the pool addresses to one IPv4 addresses, this would not be needed.

     

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           server = {

     

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             virtualisation.vlans = [

     

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               2 # towards router

     

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             ];

     

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             networking = {

     

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               useDHCP = false;

     

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               interfaces.eth1 = lib.mkForce {};

     

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             };

     

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             systemd.network = {

     

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               enable = true;

     

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               networks."vlan1" = {

     

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                 matchConfig.Name = "eth1";

     

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                 address = [

     

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                   "100.64.0.2/24"

     

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                 ];

     

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                 routes = [

     

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                   { routeConfig = { Destination = "192.0.2.0/24"; Gateway = "100.64.0.1"; }; }

     

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                 ];

     

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               };

     

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             };

     

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           };

     

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           # The router is configured with static IPv4 addresses towards the server

     

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           # and IPv6 addresses towards the client. For NAT64, the Well-Known prefix

     

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           # 64:ff9b::/96 is used. NAT64 is done with TAYGA which provides the

     

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           # tun-interface nat64 and does the translation over it. The IPv6 packets

     

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           # are sent to this interfaces and received as IPv4 packets and vice versa.

     

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           # As TAYGA only translates IPv6 addresses to dedicated IPv4 addresses, it

     

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           # needs a pool of IPv4 addresses which must be at least as big as the

     

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           # expected amount of clients. In this test, the packets from the pool are

     

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           # directly routed towards the client. In normal cases, there would be a

     

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           # second source NAT44 to map all clients behind one IPv4 address.

     

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           router = {

     

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             boot.kernel.sysctl = {

     

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               "net.ipv4.ip_forward" = 1;

     

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               "net.ipv6.conf.all.forwarding" = 1;

     

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             };

     

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             virtualisation.vlans = [

     

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               2 # towards server

     

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               3 # towards client

     

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             ];

     

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             networking = {

     

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               useDHCP = false;

     

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               useNetworkd = true;

     

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               firewall.enable = false;

     

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               interfaces.eth1 = lib.mkForce {

     

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                 ipv4 = {

     

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                   addresses = [ { address = "100.64.0.1"; prefixLength = 24; } ];

     

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                 };

     

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               };

     

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               interfaces.eth2 = lib.mkForce {

     

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                 ipv6 = {

     

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                   addresses = [ { address = "2001:db8::1"; prefixLength = 64; } ];

     

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                 };

     

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               };

     

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             };

     

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             services.tayga = {

     

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               enable = true;

     

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               ipv4 = {

     

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                 address = "192.0.2.0";

     

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                 router = {

     

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                   address = "192.0.2.1";

     

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                 };

     

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                 pool = {

     

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                   address = "192.0.2.0";

     

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                   prefixLength = 24;

     

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                 };

     

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               };

     

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               ipv6 = {

     

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                 address = "2001:db8::1";

     

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                 router = {

     

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                   address = "64:ff9b::1";

     

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                 };

     

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                 pool = {

     

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                   address = "64:ff9b::";

     

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                   prefixLength = 96;

     

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                 };

     

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               };

     

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             };

     

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           };

     

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           # The client is configured with static IPv6 addresses. It has also a static

     

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           # default route towards the router. To reach the IPv4-only server, the

     

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           # client starts the clat daemon which starts and configures the local

     

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           # IPv4 -> IPv6 translation via Tayga.

     

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           client = {

     

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             virtualisation.vlans = [

     

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               3 # towards router

     

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             ];

     

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             networking = {

     

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               useDHCP = false;

     

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               interfaces.eth1 = lib.mkForce {};

     

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             };

     

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             systemd.network = {

     

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               enable = true;

     

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               networks."vlan1" = {

     

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                 matchConfig.Name = "eth1";

     

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                 address = [

     

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                   "2001:db8::2/64"

     

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                 ];

     

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                 routes = [

     

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                   { routeConfig = { Destination = "::/0"; Gateway = "2001:db8::1"; }; }

     

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                 ];

     

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               };

     

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             };

     

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             services.clatd = {

     

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               enable = true;

     

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               settings.plat-prefix = "64:ff9b::/96";

     

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             };

     

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             environment.systemPackages = [ pkgs.mtr ];

     

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           };

     

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         };

     

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         testScript = ''

     

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           start_all()

     

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           # wait for all machines to start up

     

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           for machine in client, router, server:

     

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             machine.wait_for_unit("network-online.target")

     

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           with subtest("Wait for tayga and clatd"):

     

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             router.wait_for_unit("tayga.service")

     

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             client.wait_for_unit("clatd.service")

     

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             # clatd checks if this system has IPv4 connectivity for 10 seconds

     

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             client.wait_until_succeeds(

     

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               'journalctl -u clatd -e | grep -q "Starting up TAYGA, using config file"'

     

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             )

     

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           with subtest("Test ICMP"):

     

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             client.wait_until_succeeds("ping -c 3 100.64.0.2 >&2")

     

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           with subtest("Test ICMP and show a traceroute"):

     

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             client.wait_until_succeeds("mtr --show-ips --report-wide 100.64.0.2 >&2")

     

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           client.log(client.execute("systemd-analyze security clatd.service")[1])

     

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         '';

     

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       })

pkgs/by-name/cl/clatd/package.nix

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       , tayga

     

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       , iproute2

     

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       , iptables

     

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       , nixosTests

     

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       }:

     

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       stdenv.mkDerivation rec {

     
···

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               ]

     

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             }

     

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         '';

     

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         passthru.tests.clatd = nixosTests.clatd;

     

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         meta = with lib; {

     

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           description = "A 464XLAT CLAT implementation for Linux";