Multicast Listener Extensions for Mobile IPv6 (MIPv6) and Proxy Mobile IPv6 (PMIPv6) Fast Handovers
draft-ietf-multimob-fmipv6-pfmipv6-multicast-10

An easy read; thanks.

I have only a couple of very minor comments, both about some 2119 key words:

-- Section 4.1.2 --

   A PAR MUST advertise its support for multicast by setting the M-bit
   in the Proxy Router Advertisement (PrRtAdv) message, as specified in
   Section 5.1 of this document.

The "MUST" seems out of place here.  It seems that a PAR that doesn't support multicast doesn't do this, so that PAR violates this "MUST".  A PAR that does support multicast does this, as part of its having multicast support.  So this should probably say, "A PAR that supports multicast advertises that support by setting ..."

Similar comment about the NAR in Section 4.1.3.

-- Section 4.2.2 --

   After the departure of the MN and on the reception of a LEAVE
   message, it is RECOMMENDED that the PMAG terminates forwarding of the
   specified groups and updates its multicast forwarding database.

What are the consequences of not terminating the forwarding?  Why might a PMAG continue the forwarding, despite the "SHOULD" here, and what will happen if it does?

Thanks for doing this work, it's good to see progress for improved communications in disaster scenarios.