TCP/IPv6 Configuration and Management Manual (G06.24+)

IPv6 Fundamentals
HP NonStop TCP/IPv6 Configuration and Management Manual—524523-008
A-8
Address Prefixes
Address Prefixes
Each IPv6 address has a unique pattern of leading bits that indicates its address type.
These leading bits are named the format prefix (also referred to as a prefix). Table A-1
lists some of the IPv6 address types and their prefixes.
Solicited-Node Multicast Address
The solicited-node multicast address is used by the Neighbor Discovery Protocol when
trying to resolve another node’s IPv6 address. The solicited-node multicast address is
formed by using the prefix FF02:0:0:0:1:FF00:0/104 with the last 24 bits of an IPv6
address being resolved. For example, if the IPv6 address being resolved is:
FE80::0208:A4FF:FE2B:3008
The solicited-node multicast address would be:
FF02::1:FF2B:3008
Default Addresses Available on IPv6 Nodes
A node enabled for IPv6 has as a minimum a loopback address configured. For each
SUBNET configured with a LAN adapter, the node also has these configured:
•
A link-local unicast address.
•
A node-local all nodes multicast address (FF01::1).
•
A link-local all nodes multicast address (FF02::1).
•
A solicited-node multicast address for each unicast address assigned.
•
Multicast addresses for any joined groups.
Address Resolution
The Domain Name System (DNS) provides support for mapping names to IP
addresses and mapping IP addresses back to their corresponding names. Because of
the increase in size of the IPv6 address, the DNS has these new features:
•
AAAA resource record type
This holds IPv6 addresses, encoded in network byte order.
Table A-1. IPv6 Address Types and Prefixes
Address Type Prefix
Aggregatable Global Unicast 2000::/3
Link-local FE80::/10
Site-local FEC0::/10
Multicast FF00::/8