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 -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------