{ config, pkgs, ... }:
{
  services.kea.dhcp4 = {
    enable = true;
    settings = {
      lease-database = {
        name = "/var/lib/kea/dhcp4.leases";
        persist = true;
        type = "memfile";
      };
      rebind-timer = 2000;
      renew-timer = 1000;
      valid-lifetime = 4000;
      authoritative = true;
      option-data = [
        {
          name = "domain-name-servers";
          data = "94.45.254.2";
        }

        {
          name = "cookie-servers";
          data = "94.45.254.3";
          always-send = true;
        }
      ];

      shared-networks = [
        {
          # wifi
          id = 224;
          subnet = "94.45.224.0/20";
          pools = [ { pool = "94.45.224.10 - 94.45.239.254"; } ];
          option-data = [
            {
              name = "routers";
              data = "94.45.224.1";
            }
          ];
        }

        {
          # wired
          id = 240;
          subnet = "94.45.240.0/21";
          pools = [ { pool = "94.45.240.10 - 94.45.240.254"; } ];
          option-data = [
            {
              name = "routers";
              data = "94.45.240.1";
            }
          ];
        }

        {
          # Management
          id = 255;
          subnet = "94.45.255.0/24";
          pools = [ { pool = "94.45.255.200 - 94.45.255.254"; } ];
          option-data = [
            {
              name = "routers";
              data = "94.45.255.1";
            }
          ];
        }

        {
          # Public Services reachable event ONLY
          id = 54;
          subnet = " 94.45.254.0/25";
          pools = [ { pool = "94.45.254.100 - 94.45.255.126"; } ];
          option-data = [
            {
              name = "routers";
              data = "94.45.254.1";
            }
          ];
        }

        {
          # Public Services reachable EVERYWHERE
          id = 541;
          subnet = "94.45.254.128/25";
          pools = [ { pool = "94.45.254.230 - 94.45.255.253"; } ];
          option-data = [
            {
              name = "routers";
              data = "94.45.254.128";
            }
          ];
        }
          
      ];
    };
  };
}