Hello, 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. The authors explain there is no additional security considerations resulting from combining the two technologies. I'm not an expert in the domain and I have no strong opinion on this claim. So let's trust the authors. However these technologies do have strong security implications, as explained in [RFC5259] and [RFC5228]. So the authors should perhaps highlight this and be more directive. Regards, Vincent