{lib,...}:

let build = iface: mac: rest: lib.recursiveUpdate rest {
    systemd.network.enable = true;
    systemd.network.links."${iface}" = {
      linkConfig.Name = iface;
      matchConfig.PermanentMACAddress = mac;
    };
    systemd.network.networks."${iface}".enable = true;
}; in
{
  bridge = br: ip: gateway: iface: mac: build iface mac {
      systemd.network.networks."${iface}".bridge = [ br ];
      systemd.network.networks."${br}" = {
        address = [ ip ];
        gateway = [ gateway ];
      };
      systemd.network.netdevs."${br}" = {
        netdevConfig = {
          Name = br;
          Kind = "bridge";
        };
      };
    };
  dhcp = iface: mac: build iface mac {
    systemd.network.networks."${iface}" = {
      DHCP = "yes";
    };
  };
}