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// This is an example configuration file for the DHCPv6 server in Kea.
// It contains configuration of the PostgreSQL host database backend, used
// to retrieve reserved addresses, host names, DHCPv4 message fields
// and DHCP options from PostgreSQL database.
{ "Dhcp6":
{
// Kea is told to listen on eth0 interface only.
"interfaces-config": {
"interfaces": [ "eth0" ]
},
// We need to specify the database used to store leases. As of
// June 2022, three database backends are supported: MySQL,
// PostgreSQL and the in-memory database, Memfile.
// We'll use memfile because it doesn't require any prior set up.
"lease-database": {
"type": "memfile"
},
// This is pretty basic stuff, it has nothing to do with reservations.
"preferred-lifetime": 3000,
"valid-lifetime": 4000,
"renew-timer": 1000,
"rebind-timer": 2000,
// Kea supports two types of identifiers in DHCPv6: hw-address
// (hardware/MAC address of the client) and duid (DUID inserted by the
// client). When told to do so, Kea can check for each of these
// identifier types, but it takes a costly database lookup to do so. It
// is therefore useful from a performance perspective to use only the
// reservation types that are actually used in a given network.
"host-reservation-identifiers": [ "duid", "hw-address" ],
// Specify connection to the database holding host reservations. The type
// specifies that the PostgreSQL database is used. user and password are the
// credentials used to connect to the database. host and name specify
// location of the host where the database instance is running, and the
// name of the database to use. The server processing a packet will first
// check if there are any reservations specified for this client in the
// reservations list, within the subnet (configuration file). If there are
// no reservations there, the server will try to retrieve reservations
// from this database.
// The database specification can go into one hosts-database entry for
// backward compatibility or be listed in hosts-databases list.
"hosts-databases": [
{
"type": "postgresql",
"reconnect-wait-time": 3000, // expressed in ms
"max-reconnect-tries": 3,
"name": "keatest",
"user": "keatest",
"password": "keatest",
"host": "localhost"
}
],
// Define a subnet with a pool of dynamic addresses and a pool of dynamic
// prefixes. Addresses and prefixes from those pools will be assigned to
// clients which don't have reservations in the database. Subnet identifier
// is equal to 1. If this subnet is selected for the client, this subnet
// id will be used to search for the reservations within the database.
"subnet6": [
{
"subnet": "2001:db8:1::/48",
"pools": [ { "pool": "2001:db8:1::/80" } ],
"pd-pools": [
{
"prefix": "2001:db8:1:8000::",
"prefix-len": 56,
"delegated-len": 64
}
],
"interface": "eth0",
"id": 1
}
],
// The following configures logging. It assumes that messages with at
// least informational level (info, warn, error and fatal) should be
// logged to stdout.
"loggers": [
{
"name": "kea-dhcp6",
"output_options": [
{
"output": "stdout"
}
],
"debuglevel": 0,
"severity": "INFO"
}
]
}
}
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