{
  # config (aka server option space data config
  # authoritative is mandatory
  "Dhcp4": {
    "valid-lifetime": 1800
//  "config": [
//    /// bootp protocol is not supported
//    {
//      "name": "dynamic-bootp-lease-length",
//      "code": 5,
//      "value": 1200
//    },
//    /// bootp protocol is not supported
//    {
//      "name": "boot-unknown-clients",
//      "code": 6,
//      "value": false
//    },
//    /// min-secs is not (yet?) supported
//    /// Reference Kea #5231
//    {
//      "name": "min-secs",
//      "code": 14,
//      "value": 5120
//    },
//    /// lease-file-name is an internal ISC DHCP feature
//    {
//      "name": "lease-file-name",
//      "code": 26,
//      "value": "/tmp/leases"
//    },
//    /// local-port is not supported
//    /// command line -p parameter should be used instead
//    {
//      "name": "local-port",
//      "code": 32,
//      "value": 10067
//    },
//    /// local-address is not supported
//    /// Kea equivalent feature is to specify an interface address
//    {
//      "name": "local-address",
//      "code": 35,
//      "value": "10.5.5.1"
//    },
//    /// omapi-key is an internal ISC DHCP feature
//    {
//      "name": "omapi-key",
//      "code": 36,
//      "value": "my.key.biz"
//    },
//    /// limit-addrs-per-ia is not (yet?) supported
//    /// Reference Kea #5237
//    {
//      "name": "limit-addrs-per-ia",
//      "code": 56,
//      "value": 12345
//    },
//    /// ddns-local-address6 is not supported
//    /// Kea D2 equivalent config is ip-address
//    {
//      "name": "ddns-local-address6",
//      "code": 81,
//      "value": "2001::1"
//    },
//    /// pid-file-nam is an internal ISC DHCP feature
//    {
//      "name": "pid-file-name",
//      "code": 27,
//      "value": "/tmp/pid"
//    }
//  ]
  }
}