null

{
  interfaces-config = {
    interfaces = [
      "eth0"
    ];
  };
  lease-database = {
    name = "/var/lib/kea/dhcp4.leases";
    persist = true;
    type = "memfile";
  };
  rebind-timer = 2000;
  renew-timer = 1000;
  subnet4 = [
    {
      id = 1;
      pools = [
        {
          pool = "192.0.2.100 - 192.0.2.240";
        }
      ];
      subnet = "192.0.2.0/24";
    }
  ];
  valid-lifetime = 4000;
}