{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "required": ["tcpv4-port"],
  "properties": {
    "tcpv4-port": {
      "allOf": [{
        "$ref": "#/definitions/tcpv4port"
      }, {
        "description": "Start allocating ports at this value, going upward"
      }]
    }
  }
}
