{
  networking = {
    hostName = "kansai";
    networkmanager.enable = false;

    firewall = {
      enable = true;
      allowedUDPPorts = [ 53 ];

      allowedTCPPorts = [
        2222
        80
        443
      ];
    };

    dhcpcd = {
      wait = "background";
      extraConfig = "noarp";
    };
  };
}