The ISC DHCP includes support for IPv6 (DHCPv6) since the 4.x release with a DHCPv6 server, client and relay agent functionality. The server, client and relay agents support both IPv4 and IPv6. However, the client and the server can only manage one protocol at a time — for dual support they must be started separately for IPv4 and IPv6.

The DHCPv6 server configuration file can be found at /etc/dhcp/dhcpd6.conf.

The sample server configuration file can be found at /usr/share/doc/dhcp-<version>/dhcpd6.conf.sample.

To start the DHCPv6 service, use the command /sbin/service dhcpd6 start.

A simple DHCPv6 server configuration file can look like this:

subnet6 2001:db8:0:1::/64 {
        range6 2001:db8:0:1::129 2001:db8:0:1::254;
        option dhcp6.name-servers fec0:0:0:1::1;
        option dhcp6.domain-search "domain.example";
}