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 my second review of the draft, last time I reviewed -10 version. I looked over the diff between these versions and found that my concerns have been addressed. I'm also glad that using TLS is now mandatory. Thank you.