I have reviewed this document as part of the security directorate's ongoing effort to review all IETF documents being processed by theIESG. These comments were written primarily for the benefit of the security area directors. Document editors and WG chairs should treatthese comments just like any other last call comments. I have reviewed the -03 version of the document and the -05 version addresses the concerns I raised in my review of the -03 version. /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/ >