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 is not a protocol spec, nothing in it impacts security, and the doc (correctly) says as much. Overall, the text is quite reasonable. I sent a couple of very minior suggestions to the author. I was a bit puzzled by the status of the doc. Last week the datatracker showed that this was in RFC Editor state ISR (independent submission review), but the IESG issued a last call. It looks like the doc is being published through the IETF now and not as an independent submission, and the tracker no longer shows that RFC Editor state. -- Sam