The IESG has received a request from the Transport Area Working Group WG (tsvwg) to consider the following document: - 'Network Address Translation (NAT) Behavioral Requirements Updates' <draft-ietf-tsvwg-behave-requirements-update-06.txt> as Best Current Practice 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 2016-02-16. 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 clarifies and updates several requirements of RFC4787, RFC5382 and RFC5508 based on operational and development experience. The focus of this document is NAT44. This document updates RFC4787, RFC5382 and RFC5508. The file can be obtained via https://datatracker.ietf.org/doc/draft-ietf-tsvwg-behave-requirements-update/ IESG discussion can be tracked via https://datatracker.ietf.org/doc/draft-ietf-tsvwg-behave-requirements-update/ballot/ The following IPR Declarations may be related to this I-D: https://datatracker.ietf.org/ipr/1917/