The IPv6 equivalent of DHCP

DHCPv6

• Fundamentally different from DHCP.
• Still uses UDP.
• Client listens on UDP port 546, servers and relay channels listen on port 547.

Identifiers

• DUID: Used by the client to get the IP address of the server.

Example of operation

In this example, without rapid-commit present, the server's link-local address is fe80::0011:22ff:fe33:5566 and the client's link-local address is fe80::aabb:ccff:fedd:eeff.

• Client sends a solicit from [fe80::aabb:ccff:fedd:eeff]:546 to multicast address [ff02::1:2]:547.
• Server replies with an advertise from [fe80::0011:22ff:fe33:5566]:547 to [fe80::aabb:ccff:fedd:eeff]:546.
• Client replies with a request from [fe80::aabb:ccff:fedd:eeff]:546 to [ff02::1:2]:547.
• Server finishes with a reply from [fe80::0011:22ff:fe33:5566]:547 to [fe80::aabb:ccff:fedd:eeff]:546.