The IESG has received a request from the Sip Traversal Required for Applications to Work WG (straw) to consider the following document: - 'Loop Detection Mechanisms for Session Initiation Protocol (SIP) Back- to- Back User Agents (B2BUAs)' <draft-ietf-straw-b2bua-loop-detection-04.txt> as Proposed Standard 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 2014-04-25. 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 SIP Back-to-Back User Agents (B2BUAs) can cause unending SIP request routing loops because, as User Agent Clients, they can generate SIP requests with new Max-Forwards values. This document discusses the difficulties associated with loop detection for B2BUAs, and requirements for them to prevent infinite loops. The file can be obtained via http://datatracker.ietf.org/doc/draft-ietf-straw-b2bua-loop-detection/ IESG discussion can be tracked via http://datatracker.ietf.org/doc/draft-ietf-straw-b2bua-loop-detection/ballot/ No IPR declarations have been submitted directly on this I-D.
