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  services = {
    bind = {
      enable = true;
      cacheNetworks = [ "192.168.2.0/24" "127.0.0.0/8" ];
      zones = [
        {
          name = "localnet";
          slaves = [ ];
          file = ./localnet;
        }
        {
          name = "2.168.192.in-addr.arpa";
          slaves = [ ];
          file = ./lan.reverse;
        }
    dhcpd = {
      interfaces = [ "${LAN}" ];
      enable = true;
      machines = [
        { hostName = "ramboot"; ethernetAddress = "00:1c:23:16:4b:b3"; ipAddress = "192.168.2.10"; }
        { hostName = "amd";     ethernetAddress = "40:16:7e:b3:32:48"; ipAddress = "192.168.2.15"; }
        { hostName = "nix1";    ethernetAddress = "92:C5:E2:BB:12:A9"; ipAddress = "192.168.2.30"; }
        { hostName = "nix2";    ethernetAddress = "5E:88:5B:D7:6E:BC"; ipAddress = "192.168.2.31"; }
        { hostName = "nas";     ethernetAddress = "d0:50:99:7a:80:21"; ipAddress = "192.168.2.125"; }
      ];
      extraConfig = ''
        subnet 192.168.2.0 netmask 255.255.255.0 {
          option domain-search "localnet";
          option subnet-mask 255.255.255.0;
          option broadcast-address 192.168.2.255;
          option routers 192.168.2.1;
          option domain-name-servers 192.168.2.1;
          range 192.168.2.100 192.168.2.200;
          next-server 192.168.2.61;
          if exists user-class and option user-class = "iPXE" {
            filename "http://c2d.localnet/boot.php?mac=''${net0/mac}&asset=''${asset:uristring}";
          } else {
            filename = "undionly.kpxe";
          }
        }
      '';
    };
  };