The Dynamic Host Configuration Protocol for IPv6 (DHCPv6) enables DHCP servers to pass configuration parameters to IPv6 nodes.
DHCPv6 offers the capability of automatic allocation of reusable network addresses and additional configuration flexibility.
DHCPv6 has a client-server model, where designated DHCPv6 server hosts allocate network addresses and deliver configuration parameters to dynamically configured hosts. DHCPv6 uses a four-message exchange between client and server: SOLICIT, ADVERTISE, REQUEST, and REPLY.
DHCPv6 identifies a client by its unique identifier and uses Router Advertisement (RA) and IPv6 multicast messages.
The following scalability numbers apply to DHCPv6 relay: