Adding secdir, sorry for the duplicate post to this draft's list. 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 informational draft describes the various security issues with time distribution protocols, specifically the Network Time Protocol (NTP) and the Precision Time Protocol (PTP). This is my second review of this draft and I believe that all of my comments/concerns have been addressed in this version of the draft. Thank you. General comments: None. Editorial comments: None. Shawn. --