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. I reviewed draft-ietf-sipping-sip-offeranswer-10 back in Feburary 2009 and my comments do not seem to have caused changes to the document as far as I read the diffs. My original comments can be found here: http://www.ietf.org/mail-archive/web/secdir/current/msg00460.html /js -- Juergen Schoenwaelder Jacobs University Bremen gGmbH Phone: +49 421 200 3587 Campus Ring 1, 28759 Bremen, Germany Fax: +49 421 200 3103 < http://www.jacobs-university.de/ >