Hello, I have reviewed this document as part of the security directorate’s ongoing effort to review all IETF documents being processed by the IESG. These comments were written primarily for the benefit of the security area directors.  Document editors and WG chairs should treat these comments just like any other last call comments. IMHO, the document is  ready. This document refers to RFC 6478 and other RFCs for the security considerations. Given that no new mechanism is defined this seems reasonable.  Additional comments: - Introduction: the PSN acronym is not expanded nor introduced. - Fig. 1 refers to T-PE1 and T-PE2, while the corresponding description mentions PE1 and PE2: « In this figure, CE1 is connected to PE1 and CE2 is connected to PE2." - typo, p.4: s/describes/describe in: « Sections 6 and 7 of RFC 6870 describes… »   Also the references to section 6 and 7 point to the current I-D rather than sections 6 and 7 of RFC 6870.   Cheers,   Vincent Attachment: signature.asc Description: Message signed with OpenPGP using GPGMail