Thomas Narten wrote:

> > How so?  One can renew multicast addresses.  (Conceivably an
> > implementation could support the ability to automatically renew
> > multicast addresses as long as the unicast address stays valid.)
>
> Suppose I want to get a multicast address so I can advertise a session
> (e.g., on a web page). I do this two weeks in advance of the event. I
> want the address to last one day only. The key point is that I will
> want to use the address staring two weeks from now.
>
> However, because unicast lifetimes are only a week, that's too far
> into the future to actually get the address (yet), so the address
> can't be obtained yet. This would seem like it might be a problem.  Is
> it? (I don't know how this scenario fits with the way multicast is
> actually used in IPv4, so this really is a question.)
>
> Thomas

In IPv4 I would say, use a GLOP address for this. (We'll rent you one if you don't 
have any.)


                                 Regards
                                 Marshall Eubanks



T.M. Eubanks
Multicast Technologies, Inc
10301 Democracy Lane, Suite 410
Fairfax, Virginia 22030
Phone : 703-293-9624       Fax     : 703-293-9609
e-mail : [EMAIL PROTECTED]
http://www.on-the-i.com

Test your network for multicast : http://www.multicasttech.com/mt/
 Check the status of multicast in real time :
 http://www.multicasttech.com/status/index.html


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