Technical Summary
In customer sites having IPv4-only CPEs, Teredo provides a last
resort IPv6 connectivity [RFC4380] [RFC5991] [RFC6081]. However,
because it is designed to work without involvement of Internet
service providers, it has significant limitations (connectivity
between IPv6 native addresses and Teredo addresses is uncertain;
connectivity between Teredo addresses fails for some combinations of
NAT types). 6a44 is a complementary solution that, being base on ISP
cooperation, avoids these limitations. 6a44 uses specific prefixes
assigned by local ISPs (rather than the anycast address used by
Teredo, an evolution similar to that from 6to4 to 6rd). The
specification is complete enough for actual deployment, including
with independently written codes.
Working Group Summary
This document is in the Independent Stream, and is under RFC 5742
review by the IESG.
Document Quality
Ralph Droms reviewed the document according to RFC 5742 and
recommends responding that the IESG has no problem with the
publication of 'Native IPv6 Behind NAT44 CPEs (6a44)'
<draft-despres-6a44-01> as an Experimental RFC.
Personnel
Ralph Droms is managing the RFC 5742 review of this document.
RFC Editor Note
The IESG has concluded that this work is related to IETF work done
in WGs behave, softwire and sunset4, but this relationship does
not prevent publishing.