The IESG has received a request from the Port Control Protocol WG (pcp) to consider the following document: - 'Learning NAT64 PREFIX64s using PCP' <draft-ietf-pcp-nat64-prefix64-04.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 2014-02-04. 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 defines a new PCP extension to learn the IPv6 prefix(es) used by a PCP-controlled NAT64 device to build IPv4-converted IPv6 addresses. This extension is needed for successful communications when IPv4 addresses are used in referrals. The file can be obtained via http://datatracker.ietf.org/doc/draft-ietf-pcp-nat64-prefix64/ IESG discussion can be tracked via http://datatracker.ietf.org/doc/draft-ietf-pcp-nat64-prefix64/ballot/ No IPR declarations have been submitted directly on this I-D.