On 2011-09-20 15:58, Randy Bush wrote: >>> I think that RFC 5952 (an update on RFC 4291) provides the guidance >>> you describe in section 4.2.3. >> I see that it does (and the errata on 4291 do not). Thanks. >> >> A reasonable prefix will end with at least 64 zeros, so :: will >> always be the last element according to RFC 5952. (Unless someone >> uses prefixes longer than /64, in which case I for one don't care.) > > a shame. once upon a time, the academics in the ietf did care about > operational networks.
I'm not sure that I've yet seen a case where >64 is operationally justified, except for the /126 or whatever discussion we had a while back for pt2pt links - where I don't think the problem that started this thread would apply. -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
