Re: [MBONED] I-D ACTION:draft-ietf-mboned-mcast-arpa-01.txt

On Jul 19, 2007, at 10:10 AM, Stig Venaas wrote:

> Peter Koch wrote:
>> Dear mboned wg,
>>> 	Title		: Moving MCAST.NET into the ARPA infrastructure top level  
>>> domain
>>> 	Filename	: draft-ietf-mboned-mcast-arpa-01.txt
>> this version incorporates coments received during the Prague meeting.
>> Eligibility for a name in MCAST.ARPA is limited to group addresses  
>> from
>> 224.0.0/24 and 224.0.1/24, because other addresses in 224/8 aren't as
>> tightly controlled. The draft hopefully makes clear how a  
>> corresponding
>> reverse mapping entry will look like.
>> I'd like to receive advice on which IPv6 group addresses should be  
>> treated
>> the same way.
>
> For IPv6 it would certainly be a subset of the permanent allocations,
> which all got the T (transient) flag set to 0. From RFC 3307:
>
> 4.1  Permanent IPv6 Multicast Addresses
>
>    Permanent multicast addresses, like those defined in [RFC 2375],  
> are
>    allocated by IANA.  These addresses will be assigned with group  
> ID's,
>    in the range of 0x00000001 to 0x3FFFFFFF, on an Expert Review  
> basis.
>
>    Multicast addresses assigned by IANA MUST have the T bit set to  
> 0 and
>    the P bit set to 0.
>
> The question is whether all of these should be in the DNS, or what the
> rule should be.
>
> Most of the IANA assigned IPv6 multicast addresses are listed in RFC
> 2375. I believe all of those belong in the DNS,
>

The Fixed Scope Multicast Addresses in the following list might be a  
good guide :

http://www.iana.org/assignments/ipv6-multicast-addresses

It has the advantage of being kept up to date.

Regards
Marshall

> Stig
>
>> For detailed changes please have a look at
>> <http://tools.ietf.org/wg/mboned/draft-ietf-mboned-mcast-arpa/>
>> Thanks,
>>   Peter
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>
>
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