Subject: [AVT] specifying the multicast interface

From: "Matthew Heaney" <[email-masked]>
Date: Fri, 10 Oct 2003 15:24:59 -0400

When creating a multicast session, it is possible to specify the
outgoing interface using the IP_MULTICAST_IF socket option.  Does RFC
3550 (or 1889) prescribe a mechanism for specifying the interface?

Analogously, the IP_ADD_MEMBERSHIP socket option allows the receiver to
specify the multicast interface explicitly (via the imr_interface data
member of the ip_mreq struct).  Is there a mechanism (via the SDP
DESCRIBE, I guess) for indicating the multicast interface?

Thanks,
Matt

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