Reviewer: Liang Xia Review result: Ready Reviewer: Liang Xia Review result: Ready 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. This document specifies guidelines for defining packet timestamp formats in networking protocols at various layers. It also presents three recommended timestamp formats. This document is well written, and the security considerations section discusses the potential security issues comprehensively, I don't see any other issues missed. In summary, I think this document is ready to go. -- last-call mailing list last-call@xxxxxxxx https://www.ietf.org/mailman/listinfo/last-call