IPv6 Multihoming without Network Address Translation
Draft of message to be sent after approval:
From: The IESG <firstname.lastname@example.org> To: IETF-Announce <email@example.com> Cc: RFC Editor <firstname.lastname@example.org>, v6ops mailing list <email@example.com>, v6ops chair <firstname.lastname@example.org> Subject: Document Action: 'IPv6 Multihoming without Network Address Translation' to Informational RFC (draft-ietf-v6ops-ipv6-multihoming-without-ipv6nat-04.txt) The IESG has approved the following document: - 'IPv6 Multihoming without Network Address Translation' (draft-ietf-v6ops-ipv6-multihoming-without-ipv6nat-04.txt) as an Informational RFC This document is the product of the IPv6 Operations Working Group. The IESG contact persons are Ron Bonica and Dan Romascanu. A URL of this Internet Draft is: http://datatracker.ietf.org/doc/draft-ietf-v6ops-ipv6-multihoming-without-ipv6nat/
Technical Summary Network Address and Port Translation (NAPT) works well for conserving global addresses and addressing multihoming requirements, because an IPv4 NAPT router implements three functions: source address selection, next-hop resolution and optionally DNS resolution. For IPv6 hosts one approach could be the use of IPv6 NAT. However, NAT should be avoided, if at all possible, to permit transparent host-to- host connectivity. In this document, we analyze the use cases of multihoming. We also describe functional requirements for multihoming without the use of NAPT in IPv6 for hosts and small IPv6 networks that would otherwise be unable to meet minimum IPv6 allocation criteria. Working Group Summary This was originally posted in May 2010 discussed at IETF-78 in Maastricht, and reported on in IETF-79 at Beijing. The working group requested that it become a working group draft; it was originally posted as draft-ietf-v6ops-multihoming-without-nat66 in December 2010, and reposted as draft-ietf-v6ops-ipv6-multihoming-without-ipv6nat in March 2011. It has in essence been a requirement document feeding into 6MAN and MIF. Related work in those working groups has been proceeding to bring the issues to closure. Document Quality The document describes a network paradigm being used by certain networks in Japan, and describes the issues that prevent them from deployment. As such, its intent and result has been to focus action on the resolution of those problems. Personnel Fred Baker is shepherd.