HP 6200YL - Manual (Page 67)

IPv6 Addressing
Loopback Address
■ RFC 4007: IPv6 Scoped Address Architecture
■ RFC 4291: IP Version 6 Addressing Architecture
■ “Internet Protocol Version 6 Multicast Addresses” (at www.iana.org)
■ RFC 2710: Multicast Listener Discovery (MLD) for IPv6
■ RFC 3810: Multicast Listener Discovery Version 2 (MLDv2) for IPv6
(Updates RFC 2710.)
Loopback Address
The IPv6 loopback address is a link-local unicast address that enables a device
to send traffic to itself for self-testing purposes. The loopback address does
not have a physical interface assignment. If an IPv6 packet destined for the
loopback address is received on a switch interface, it must be dropped. The
IPv6 loopback address is never used as the source IPv6 address for any packet
that is sent out of a device, and the switch drops any traffic it receives with a
loopback address destination. An example use case is:
ProCurve# ping6 ::1
0000:0000:0000:0000:0000:0000:0000:0001 is alive, time = 1 ms
The Unspecified Address
The “unspecified” address is defined as 0.0.0.0.0.0.0.0 (::/128, or just ::). It can
be used, for example, as a temporary source address in multicast traffic sent
by an interface that has not yet acquired its own address. The unspecified
address cannot be statically configured on the switch, or used as a destination
address.
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