Hi Sergio, all,

  |Although the motivation is clear, this seems as a light requirement to
  |be achieved, in the sense that it can be easily transposed. Do you
  |have in mind what is a valid "justification" for not addressing multicast?

I think we already discussed this in Atlanta. Multicast support should not 
become yet-another-reason to delay DMM solutions, let alone the requirements 
document.

And, to be honest, if I just "think wider", REQ3, 4, and 5 (IPv6, existing 
mobility protocols, and compatibility) should be sufficient to cover "multicast 
support". I copy-paste from the respective motivation sections: "DMM solutions 
SHOULD target IPv6 as the primary deployment environment." [..] "A DMM solution 
SHOULD first consider reusing and extending IETF-standardized protocols before 
specifying new protocols." I think these two would in general cover also stuff 
developed in multimob. And, as if this is not sufficient, then REQ5 should 
close this discussion: "The DMM solution MUST be able to co-exist with existing 
network deployments and end hosts." Therefore, if you already have multicast 
services in your domain, the DMM solution should handle them.

Now, we did agree in Atlanta to have a quick resolution wrt to multicast, and 
perhaps explicitly add "REQ7: Multicast support", if the multimob folks can 
deal with this in an expedient manner. If not, imo, REQs 3/4/5 should more than 
suffice to cover "multicast support in DMM".

Best Regards,

Kostas



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