TCP/IPv6 Configuration and Management Manual (G06.29+, H06.03+, J06.03+)

IPv6 Fundamentals
HP NonStop TCP/IPv6 Configuration and Management Manual—524523-012
A-6
Types of Addresses

Site-local
Used for sites or organizations that are not connected to the global Internet.
This address is assumed to be unique only in the site to which the interface is
connected. The format of this address is:
If you plan to use site-local addresses, be aware of these guidelines:

Do not connect a single node to multiple sites.

Do not use site-local addresses in the global DNS (the addresses cannot
be visible outside the site).

Dynamic DNS updates for site-local addresses are not supported.

Do not advertise or propagate routes containing site-local prefixes outside
the site.
Interfaces typically have multiple IPv6 addresses. After NonStop TCP/IPv6 is
configured and the subsystem started, the SUBNET and configured tunnel interfaces
are automatically assigned a link-local address. If a router is on the link, the system
also autoconfigures a global unicast address on the interfaces unless address
autoconfiguration is disabled.
Multicast Address
A multicast address is an identifier for a group of nodes, similar to an IPv4 multicast
address. Multicast addresses have this format:
Figure A-6. Link-Local Address
Figure A-7. Site-Local Address
0
127
10 bits 54 bits
64 bits
1111111010 00...................................00
Interface ID
VST149.vsd
0127
10 bits
38 bits
16 bits
VST150.vsd
64 bits
1111111011
00.............00 Subnet ID Interface ID