
192 Part Two • IPv6 Protocols
The solicited-node multicast address is also used for other neighbor
discovery purposes, allowing nodes to more quickly map an IPv6 address
to a link layer network address.
10.5 Multicast Listener Discovery (MLD) for IPv6
IPv4 multicast group membership is managed through the use of a
separate protocol, the Internet Group Management Protocol (IGMP).
Considered part of IPv4, IGMP works much like ICMP in that it permits
nodes to exchange network metainformation. IPv4 nodes exchange IGMP
messages, usually with routers, to indicate the multicast groups to which
they wish to subscribe.
Under IPv6, multicast group management is ...