The IESG has received a request from the IPv6 Maintenance WG (6man) to consider the following document: - 'IPv6 UDP Checksum Considerations' <draft-ietf-6man-udpzero-06.txt> as Informational RFC The IESG plans to make a decision in the next few weeks, and solicits final comments on this action. Please send substantive comments to the ietf@ietf.org mailing lists by 2012-10-02. Exceptionally, comments may be sent to iesg@ietf.org instead. In either case, please retain the beginning of the Subject line to allow automated sorting. Abstract This document examines the role of the UDP transport checksum when used with IPv6, as defined in RFC2460. It presents a summary of the trade-offs for evaluating the safety of updating RFC 2460 to permit an IPv6 UDP endpoint to use a zero value in the checksum field as an indication that no checksum is present. This method is compared with some other possibilities. The document also describes the issues and design principles that need to be considered when UDP is used with IPv6 to support tunnel encapsulations. It concludes that UDP with a zero checksum in IPv6 can safely be used for this purpose, provided that this usage is governed by a set of constraints. The file can be obtained via http://datatracker.ietf.org/doc/draft-ietf-6man-udpzero/ IESG discussion can be tracked via http://datatracker.ietf.org/doc/draft-ietf-6man-udpzero/ballot/ No IPR declarations have been submitted directly on this I-D.
