Hi, I have reviewed this document as part of the Operational directorate's ongoing effort to review all IETF documents being processed by the IESG. These comments were written with the intent of improving the operational aspects of the IETF drafts. Comments that are not addressed in last call may be included in AD reviews during the IESG review. Document editors and WG chairs should treat these comments just like any other last call comments. Status: Ready for publication Overall, I found this to be a very well written document. For a doc that tracks at ~65 pages, I couldn't find any critiques, short of editorial nits here and there. It reads as "thoughtful", and as if it's had the many reviews and eyeballs on it as it seems to have had. I also appreciated the feedback and advice regarding performance. A big thank you to the authors, the WG, and the reviewers who pitched in; your effort shows. Thanks Sarah