Hi,
> Section 4 of RFC 3484 states:
> (http://tools.ietf.org/html/rfc3484#section-4)
> 4. Candidate Source Addresses
> [. . .]
> In any case, anycast addresses, multicast addresses, and the
> unspecified address MUST NOT be included in a candidate set.
I don't know the exact reason but RFC2373[1] says:
2.6 Anycast Addresses
...
There is little experience with widespread, arbitrary use of internet
anycast addresses, and some known complications and hazards when
using them in their full generality [ANYCST]. Until more experience
has been gained and solutions agreed upon for those problems, the
following restrictions are imposed on IPv6 anycast addresses:
o An anycast address must not be used as the source address of an
IPv6 packet.
o An anycast address must not be assigned to an IPv6 host, that
is, it may be assigned to an IPv6 router only.
(Note: statement above was removed in RFC4291)
Thanks,
Tomoyuki Sahara
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