kea/doc/examples/kea6/classify.json

# This is an example configuration file for the DHCPv4 server in Kea.
# The purpose of this example is to showcase how clients can be classified.

{ "Dhcp6":

{ 
# Kea is told to listen on ethX interface only.
  "interfaces-config": {
    "interfaces": [ "ethX" ]
  },

# Let's use the simplest backend: memfile and use some reasonable values
# for timers. They are of no concern for the classification demonstration.
  "lease-database": { "type": "memfile" },
  "renew-timer": 1000,
  "rebind-timer": 2000,
  "preferred-lifetime": 3000,
  "valid-lifetime": 4000,

# This list defines several classes that incoming packets can be assigned to.
# One packet can belong to zero or more classes.
  "client-classes": [

# The first class attempts to match all packets coming in on ethX interface.
  {
      "name": "lab",
      "test": "pkt.iface == 'ethX'",
      "option-data": [{
          "name": "dns-servers",
          "data": "2001:db8::1"
      }]
  },

# Let's classify all incoming RENEW (message type 5) to a separate
# class.
  {
      "name": "renews",
      "test": "pkt6.msgtype == 5"
  },

# Let's pick cable modems. In this simple example we'll assume the device
# is a cable modem if it sends a vendor option with enterprise-id equal
# to 4491.    
  {
      "name": "cable-modems",
      "test": "vendor.enterprise == 4491"
  },

  ],
    

# The following list defines subnets. Each subnet consists of at
# least subnet and pool entries.
  "subnet6": [ 
    {
        "pools": [ { "pool": "2001:db8:1::/80" } ],
        "subnet": "2001:db8:1::/64",
        "client-class": "cable-modems",
        "interface": "ethX"
    },
    {
        "pools": [ { "pool": "2001:db8:2::/80" } ],
        "subnet": "2001:db8:2::/64",
        "interface": "ethX"
    }
  ]
},

# The following configures logging. Kea will log all debug messages
# to /var/log/kea-debug.log file.
"Logging": {
    "loggers": [
        {
            "name": "kea-dhcp6",
            "output_options": [
                {
                    "output": "/var/log/kea-debug.log"
                }
            ], 
            "debuglevel": 99,
            "severity": "DEBUG"
        }
    ]
}

}