Hi, 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. The problem statement and mechanisms to address it are well laid out. The Security Considerations section is appropriate for the document. I found no nits. Best regards, Chris