{
  # subclass declaration config
  # options
  "Dhcp6": {
    "option-def": [
      {
        "space": "dhcp6",
        "name": "hardware",
        "code": 1250,
        "type": "string"
      },
      {
        "space": "dhcp6",
        "name": "myversion",
        "code": 1251,
        "type": "uint16"
      }
    ],
    "client-classes": [
      # superclass declaration
      /// match: option dhcp6.hardware
      {
        "name": "foobar",
        "option-data": [
          # no harware in DHCPv6
          {
            "space": "dhcp6",
            "name": "myversion",
            "code": 1251,
            "data": "1"
          }
        ]
      },
      # simple subclass declaration
      /// subclass selector 0x0x0100070e364819
      {
        "name": "sub#foobar#0",
        "option-data": [
          # no harware in DHCPv6
          {
            "space": "dhcp6",
            "name": "myversion",
            "code": 1251,
            "data": "1"
          }
        ],
        /// from: match option dhcp6.hardware
        /// data: 0x0100070e364819
        "test": "option[1250].hex == 0x0100070e364819"
      },
      # option setting subclass declaration
      /// subclass selector 0x0x01000bfd32e6fa
      {
        "name": "sub#foobar#1",
        "option-data": [
          {
            "space": "dhcp6",
            "name": "myversion",
            "code": 1251,
            "data": "2"
          }
        ],
        /// from: match option dhcp6.hardware
        /// data: 0x01000bfd32e6fa
        "test": "option[1250].hex == 0x01000bfd32e6fa"
      },
      # complex subclass declaration
      /// subclass selector 0x0x010002b388c527
      {
        "name": "sub#foobar#2",
        "option-data": [
          {
            "space": "dhcp6",
            "name": "myversion",
            "code": 1251,
            "data": "3"
          }
        ],
//      /// Per-class limit is not supported by Kea
//      /// Reference Kea #237
//      "lease-limit": 20,
        /// from: match option dhcp6.hardware
        /// data: 0x010002b388c527
        "test": "option[1250].hex == 0x010002b388c527"
      }
    ]
  }
}