let
  listenPort = 12345;
  socketNamespace = "foo";
  interfaceNamespace = "bar";
  node = {
    networking.wireguard.interfaces.wg0 = {
      listenPort = listenPort;
      ips = [ "10.10.10.1/24" ];
      privateKeyFile = "/etc/wireguard/private";
      generatePrivateKeyFile = true;
    };
  };

in

import ../make-test-python.nix (
  {
    pkgs,
    lib,
    kernelPackages ? null,
    ...
  }:
  {
    name = "wireguard-with-namespaces";
    meta = with pkgs.lib.maintainers; {
      maintainers = [ asymmetric ];
    };

    nodes = {
      # interface should be created in the socketNamespace
      # and not moved from there
      peer0 = pkgs.lib.attrsets.recursiveUpdate node {
        boot = lib.mkIf (kernelPackages != null) { inherit kernelPackages; };
        networking.wireguard.interfaces.wg0 = {
          preSetup = ''
            ip netns add ${socketNamespace}
          '';
          inherit socketNamespace;
        };
      };
      # interface should be created in the init namespace
      # and moved to the interfaceNamespace
      peer1 = pkgs.lib.attrsets.recursiveUpdate node {
        boot = lib.mkIf (kernelPackages != null) { inherit kernelPackages; };
        networking.wireguard.interfaces.wg0 = {
          preSetup = ''
            ip netns add ${interfaceNamespace}
          '';
          mtu = 1280;
          inherit interfaceNamespace;
        };
      };
      # interface should be created in the socketNamespace
      # and moved to the interfaceNamespace
      peer2 = pkgs.lib.attrsets.recursiveUpdate node {
        boot = lib.mkIf (kernelPackages != null) { inherit kernelPackages; };
        networking.wireguard.interfaces.wg0 = {
          preSetup = ''
            ip netns add ${socketNamespace}
            ip netns add ${interfaceNamespace}
          '';
          inherit socketNamespace interfaceNamespace;
        };
      };
      # interface should be created in the socketNamespace
      # and moved to the init namespace
      peer3 = pkgs.lib.attrsets.recursiveUpdate node {
        boot = lib.mkIf (kernelPackages != null) { inherit kernelPackages; };
        networking.wireguard.interfaces.wg0 = {
          preSetup = ''
            ip netns add ${socketNamespace}
          '';
          inherit socketNamespace;
          interfaceNamespace = "init";
        };
      };
    };

    testScript = ''
      start_all()

      for machine in peer0, peer1, peer2, peer3:
          machine.wait_for_unit("wireguard-wg0.service")

      peer0.succeed("ip -n ${socketNamespace} link show wg0")
      peer1.succeed("ip -n ${interfaceNamespace} link show wg0")
      peer2.succeed("ip -n ${interfaceNamespace} link show wg0")
      peer3.succeed("ip link show wg0")
    '';
  }
)