Managing HP Serviceguard for Linux, Seventh Edition, July 2007

IPv6 Network Support
IPv6 Address Types
Appendix E 361
IPv4 Mapped IPv6 Address
There is a special type of IPv6 address that holds an embedded IPv4
address. This address is used to represent the addresses of IPv4-only
nodes as IPv6 addresses. These addresses are used especially by
applications that support both IPv6 and IPv4. These addresses are called
as IPv4 Mapped IPv6 Addresses. The format of these address is as
follows:
Example:
::ffff:192.168.0.1
Aggregatable Global Unicast Addresses
The global unicast addresses are globally unique IPv6 addresses. This
address format is very well defined in the RFC 2374 (An IPv6
Aggregatable Global Unicast Address Format). The format is:
where
FP = Format prefix. Value of this is “001” for Aggregatable Global
unicast addresses.
TLA ID = Top-level Aggregation Identifier.
RES = Reserved for future use.
NLA ID = Next-Level Aggregation Identifier.
SLA ID = Site-Level Aggregation Identifier.
Interface ID = Interface Identifier.
Table E-4
80 bits 16 bits 32 bits
zeros FFFF IPv4 address
Table E-5
3 13 8 24 16 64 bits
FP TLA ID RES NLA ID SLA ID Interface ID