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. This document describes mechanisms for assigning link layer addresses by using DHCPv6 extension. I do not find any major issue from the OPS point of view, I think this doc is ready for publication as RFC. One suggestion on the proposed IA_LL and LLADDR options. It's better to extend and describe the acronyms as early as possible. Cheers, Tianran