This draft was submitted for discussion in the IETF Mbone Deployment (MBONED) working group at the 46th IETF meeting. It was not intended to be published as an RFC.

An undesirable interaction between multicast scoping and SDP is noted. An extension to SDP to allow identification of the multicast scopes within which the session is valid is proposed.

Opinions expressed are my own, and do not represent those of my employers or the organisations that fund my research.