DHCPv6
The Dynamic Host Configuration Protocol for IPv6 (DHCPv6) is an application layer protocol that provides a DHCPv6 client with IPv6 an address, and other configuration information, that is carried in the DHCPv6 options.
DHCPv6 is both a Stateful Address Autoconfiguration protocol and a Stateless Address Configuration protocol.
The client and server exchange DHCPv6 message over UDP; the client uses a link-local address, DHCPv6 receives message over the link-scoped multicast address. If the DHCPv6 server is not attached to the same link, then a DHCPv6 relay agent on the client's link will relay messages between the DHCPv6 client and DHCPv6 server, as shown in the following screenshot:
DHCPv6 Wireshark filter
Use the
dhcpv6 display filter to show DHCPv6 traffic. For the capturing filter, use UDP port 547.
Multicast addresses
Multicast addresses are used by the DHCPv6 client to send datagrams to a group of DHCPv6 servers:
For all DHCP relay agents and servers, the address is
FF02::1:2(link...