Technical Summary
6to4 Provider Managed Tunnels (6to4-PMT) provide a framework which
can help manage 6to4 [RFC3056] tunnels operating in an anycast
[RFC3068] configuration. The 6to4-PMT framework is intended to serve
as an option to operators to help improve the experience of 6to4
operation when conditions of the network may provide sub-optimal
performance or break normal 6to4 operation. 6to4-PMT provides a
stable provider prefix and forwarding environment by utilizing
existing 6to4 relays with an added function of IPv6 Prefix
Translation. This operation may be particularly important in NAT444
infrastructures where a customer endpoint may be assigned a non-
RFC1918 address thus breaking the return path for anycast [RFC3068]
based 6to4 operation. The 6to4-PMT model has successfully been used
in a production network and has been implemented as open source code
and by a major routing vendor.
Working Group Summary
This document is not the product of any IETF WG.
Document Quality
This draft was considered by the V6OPS WG and considered to be out of scope.
However, no significant defects in the document were identified.
Personnel
Ron Bonica is the document shepherd
IESG Note
The IESG has concluded that this work is related to IETF work done
in the V6OPS WG, but this relationship does not prevent publishing.