AIX Version 4.3 Differences Guide

0:0:0:0:0:FFFF:129.144.52.38
or in compressed form:
::13.1.68.3
::FFFF:129.144.52.38
Note: FFFF is used to represent addresses of IPv4-only nodes (those that do not
support IPv6).
7.1.2.2 Types of IPv6 Address
In IPv6, there are three types of addresses:
Unicast
An identifier for a single interface. A packet sent to a unicast address
is delivered to the interface identified by that address. A unicast
address has a particular scope as shown in the following lists:
• link-local
– Valid only on the local link (that is, only one hop away).
– Prefix is fe80::/16.
• site-local
– Valid only at the local site (for example, inside IBM Austin).
– Prefix is fec0::/16.
• global
– Valid anywhere in the Internet.
– Prefix may be allocated from unassigned unicast space.
There are also two special unicast addresses:
• ::/128 (unspecified address).
• ::1/128 (loopback address - note that in IPv6 this is only one
address not an entire network).
Multicast
An identifier for a set of interfaces (typically belonging to different
nodes). A packet sent to a multicast address is delivered to all
interfaces identified by that address. A multicast address is identified
by the prefix ff::/8. As with unicast addresses, multicast addresses
have a similar scope. This is shown in the following lists:
• Node-local
– Valid only on the source node (for example, multiple processes
listening on a port).
– Prefix is ff01::/16 or ff11::/16.
• Link-local
– Valid only on hosts sharing a link with the source node (for
example, Neighbor Discovery Protocol [NDP] data).
– Prefix is ff02::/16 or ff12::/16.
Networking Enhancements 149