A new IETF working group has been formed in the Internet Area. For additional information, please contact the Area Directors or the WG Chairs. sunset4 (sunset4) -------------------- Current Status: Active Chairs (proposed): Marc Blanchet <marc.blanchet@viagenie.ca> Wes George <wesley.george@twcable.com> INT Area Director: Ralph Droms <rdroms.ietf@gmail.com> Area Advisors: OPS: Fred Baker <Fred@cisco.com> TSV: Martin Stiemerling <martin.stiemerling@neclab.eu> RTG: Stewart Bryant <stbryant@cisco.com> Mailing Lists: Address: sunset4@ietf.org List Subscription: https://www.ietf.org/mailman/listinfo/sunset4 Email Archive: http://www.ietf.org/mail-archive/web/sunset4/ Description of Working Group: The IETF is committed to the deployment of IPv6 to ensure the evolution of the Internet. However, the IPv4-only components of the Internet must continue to operate as much as possible during the transition from IPv4 to IPv6. The Working Group will standardize technologies that facilitate the graceful sunsetting of the IPv4 Internet in the context of the exhaustion of IPv4 address space while IPv6 is deployed. These technologies will likely be less optimal than equivalent technologies for IPv6-only and dual-stack networks. The Working Group works only on IPv4 protocols to facilitate IPv4 sunsetting. The Working Group may work on fixing security bugs in existing IPv4-specific protocols but is not chartered to add new security functionality to those protocols. The working group will provide a single venue for the consideration of IPv4 sunsetting, while ensuring that any such technologies do not impede the deployment of IPv6 and do not duplicate functions and capabilities already available in existing technologies. Therefore, along the lines of draft-george-ipv6-support, before the working group adopts any technology, it must: 1) describe the problem to be solved and show that there is widespread demand for a solution 2) demonstrate that the problem can not be solved with existing technologies 3) provide a description of the proposed solution along with the impact on current IPv4-only use and its ability to promote the deployment of IPv6 These steps will likely be described in the form of a use case and requirements document. Only after the above mentioned steps have been completed and the results accepted by the community will the IETF consider adding new work items to the Working Group charter. This new work may include protocol specifications. The work spans over multiple IETF areas including as Internet, Operations, Transport and Routing. Therefore, cross-area coordination and support is essential and required. Any work on IPv4 to IPv6 transition methods is out of scope. The initial work items are: * Review current Carrier-Grade NAT (CGN) documents and related issues, including requirements for standardization, and determine if CGN is a suitable sunsetting technology to become a work item: draft-ietf-behave-lsn-requirements draft-ietf-behave-nat-mib CGN port allocation methods * Gap analysis of IPv4 features to facilitate IPv4 sunsetting Milestones 2012-09 Complete review of CGN and, if necessary, propose CGN work items 2013-06 Send gap analysis on IPv4 sunsetting to IESG
