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. The summary of the review is Ready (with one nit) A well written document with clear security consideration section. The only comment I have is that I did not see an acknowledgment section. Few people provided feedback on the mailing list, and I think these people should be acknowledged.