Greetings, I am the assigned Gen-ART reviewer for this draft. The General Area Review Team (Gen-ART) reviews all IETF documents being processed by the IESG for the IETF Chair. Please treat these comments just like any other participants comments. For more information, please see the FAQ at . Document: draft-ietf-tram-turn-mobility-03 Reviewer: Pete Resnick Review Date: 2016-09-06 IESG Telechat date: 2016-09-01 Summary: This is an odd post-telechat review, but I think the draft has gone from "Ready" to "Ready with an issue" because of an IESG Eval change. Details: I did not get to my post-Last Call GenART review of draft-ietf-tram-turn-mobility until after the telechat. Had I done so, which would have been on version -05, I would have said "Looks fine to me". However, I happened to look at the latest version, figuring I would just confirm. I found that a change was made in response to an IESG Evaluation comment from Suresh : > ---------------------------------------------------------------------- > COMMENT: > ---------------------------------------------------------------------- > > * Section 3.2.1 > > The section on sending a Refresh when the IP address does not change > needs a little bit more tightening. Given that the server would reject > the request with a mobility ticket in this case, it would be good to > put > in an explicit restriction to not add the mobility ticket in the > following statement > > OLD: If a client wants to refresh an existing allocation and update > its > time-to-expiry or delete an existing allocation, it will send a > Refresh > Request as described in Section 7.1 of [RFC5766] > > NEW: > If a client wants to refresh an existing allocation and update its > time-to-expiry or delete an existing allocation, it MUST send a > Refresh > Request as described in Section 7.1 of [RFC5766] and MUST NOT include > a > MOBILITY-TICKET attribute. I'm not sure if the "MUST NOT" in the latter part of the sentence is correct: Since the server will reject it anyway, I don't see the harm in including the attribute that the "MUST NOT" implies, but perhaps this is belt-and-braces protocol description. On this point, I can't complain too much. However, I believe Suresh was incorrect in suggesting the first "MUST", and it should be removed. There is no harm being prevented here. "If a client wants X, it MUST send Y" is absolutely no different protocol-wise from "If a client wants X, it will send Y". The "MUST" is a misuse. I believe that this change should be undone before publication. pr -- Pete Resnick Qualcomm Technologies, Inc. - +1 (858)651-4478