The IESG has approved the Internet-Draft 'Connection of IPv6 Domains via IPv4 Clouds without Explicit Tunnels' <draft-ietf-ngtrans-6to4-07.txt> as a Proposed Standard. This document is the product of the Next Generation Transition Working Group. The IESG contact persons are Bert Wijnen and Randy Bush. Technical Summary The motivation for this method is to allow isolated IPv6 domains or hosts, attached to an IPv4 network with no native IPv6 support, to communicate with other IPv6 domains or hosts with minimal manual configuration. It also automatically provides a globally unique IPv6 address prefix to any site with at least one globally unique IPv4 address, even if combined with an IPv4 Network Address Translator (NAT). It does so by specifying a mechanism for assigning a unique IPv6 address prefix to any site that currently has at least one globally unique IPv4 address, and this document describes scenarios for using such a prefix during the co-existence phase of IPv4 to IPv6 transition. Effectively it treats the IPv4 network as a unicast link layer. Note that this is not considered to be a long term solution and that sites should migrate in due course to native IPv6 prefixes. Working Group Summary The working group reached consensus on this document. There were no objections during any last calls. Protocol Quality This document was reviewed for the IESG by Randy Bush. Test implementations are available on BSD platforms, but not from major router vendors.
