{
  inputs',
  pkgs,
  lib,
  ...
}: let
  inherit
    (lib)
    concatMap
    ;
in {
  imports = [
    inputs'.self.nixosModules.ifstate
    inputs'.self.nixosModules.netnsIf
    ./qemu-vm.nix
  ];
  nixpkgs.overlays = [
    inputs'.self.overlays.ifstate
  ];

  environment.systemPackages = [pkgs.tcpdump];

  services.ifstate = {
    enable = true;

    settings = {
      interfaces = [
        {
          name = "lan";
          link = {
            kind = "physical";
            permaddr = "00:11:22:33:43:00";
            state = "up";
          };
        }
      ];
    };
  };

  networking = {
    hostName = "client";
    useDHCP = false;
    interfaces.lan.useDHCP = true;
    firewall.enable = false;
  };

  virtualisation.qemu.options = [
    "-net nic,model=e1000,macaddr=00:11:22:33:43:00,netdev=lan"
    "-netdev vde,id=lan,sock=../../../hel/switch"
  ];
}