I generated this review of 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
with the intent of improving security requirements and considerations
in IETF drafts.  Comments 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 updates RFC4566 on the Session Description Protocol, SDP.  The Security Considerations Section is well-written and well-thought out, and it updates the RFC4566 security considerations when appropriate.  I consider this document READY.