multicast-number

[Patrick Cipiere <Patrick.Cipiere@UDcast.com>]

Regarding the IESG comment

> 4. > "DTCP announcement" multicast group is 224.0.1.124.
>
> Seems like a link-local address would be more appropriate (224.0.0.x).

I asked IANA and Thomas Narten about this change from 224.0.1.124 to
224.0.0.x

The answer from IANA:

> See Thomas Narten's suggestions in his e-mail.
> 
> Also:
> Would it be possible to complete an application for the new multicast
> address?  Please state that you will no longer need the below mentioned
> address.  After we review your application we will let you know if further
> information is needed.  The application can be found at the following:
> 
> <http://www.iana.org/cgi-bin/multicast.pl>

and the answer from Thomas:

> My guess would be you should do this in two steps.
>
> 1) request a link-local multicast address, put in the document and
>   ship it.
>
> 2) Verify that no one is using the previous assignment (this may
>    already have been done) and then explicit indicate that it is not
>    actually being used and can be reassigned to someone else.
>
> Doing this in two steps may speed up the process of getting the
> document approved.   

So now I am asking the group: do you agree that we have to ask IANA
for this change?
How much that will hurt current implementations?

Thanks for your comments,
Patrick.
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