Last Call Review of draft-ietf-v6ops-6to4-to-historic-11
review-ietf-v6ops-6to4-to-historic-11-opsdir-lc-brownlee-2015-03-11-00

Hi all:

I have performed an Operations Directorate review of
    draft-ietf-v6ops-6to4-to-historic-11

  "Experience with the "Connection of IPv6 Domains via IPv4 Clouds
   (6to4)" IPv6 transition mechanism defined in RFC 3056 has shown that
   when used in its anycast mode, the mechanism is unsuitable for
   widespread deployment and use in the Internet.  This document
   therefore requests that RFC 3068, "An Anycast Prefix for 6to4 Relay
   Routers", be made obsolete and moved to historic status.  It also
   obsoletes RFC 6732 "6to4 Provider Managed Tunnels".  It recommends
   that future products should not support 6to4 anycast and that
   existing deployments should be reviewed.  This complements the
   guidelines in RFC 6343."

- - - -

This is a short draft that does exactly what its abstract (above)
says.  On the way it explains briefly what the 6to4 deployment problems
are, and make it clear that although 3068 should become Historical
and 6372 Obsolete, that really means "don't do this in new deployments,"
and if you have it deployed, "consider whether it's really still needed."

Overall, a good document, ready for publication.


Cheers, Nevil
Co-chair, IPFIX and EMAN WGs

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 Nevil Brownlee                          Computer Science Department
 Phone: +64 9 373 7599 x88941             The University of Auckland
 FAX: +64 9 373 7453   Private Bag 92019, Auckland 1142, New Zealand