IPv6 Addresses for a Host

An IPv4 host with a single network adapter typically has a single IPv4 address assigned to that adapter. An IPv6 host, however, usually has multiple IPv6 addresses assigned to each adapter. The interfaces on a typical IPv6 host are assigned the following unicast addresses:

  • A link-local address for each interface
  • Additional unicast addresses for each interface (which could be a site-local address and one or multiple global addresses)
  • The loopback address (::1) for the loopback interface

Typical IPv6 hosts are always logically multihomed because they always have at least two addresses with which they can receive packets—a link-local address for local link traffic and a routable site-local or global address.

Additionally, each interface on an IPv6 host is listening for traffic on the following multicast addresses:

  • The node-local scope all-nodes multicast address (FF01::1)
  • The link-local scope all-nodes multicast address (FF02::1)
  • The solicited-node address for each unicast address
  • The multicast addresses of joined groups

Understanding IPv6
Understanding Ipv6
ISBN: 0735612455
EAN: 2147483647
Year: 2005
Pages: 124
Authors: Joseph Davies

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