All things related to multicast

[ken lindahl <>]

hi Matt,

On 10/1/2008 8:20 AM Matthew Davy wrote:
> I did a google search on in-addr.arpa delegation for GLOP addresses and 
> the only thing relevant that turned up was an email from Bill Nickless 
> to this same list in January of 2001.   There was no answer to his email 
> on the list.
>
> Has anyone been able to get the in-addr.arpa domain for their GLOP 
> address delegated to them ?

yes:

$ dig ns -x 233.0.25 @flag.ep.net

; <<>> DiG 9.3.5-P2 <<>> ns -x 233.0.25 @flag.ep.net
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 46474
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 0

;; QUESTION SECTION:
;25.0.233.in-addr.arpa.         IN      NS

;; AUTHORITY SECTION:
25.0.233.in-addr.arpa.  86400   IN      NS      ns1.Berkeley.EDU.
25.0.233.in-addr.arpa.  86400   IN      NS      ns2.Berkeley.EDU.

(UCB is AS25.) i hope you don't next ask me to recall how i managed
to get it delegated. that was quite awhile ago...

> It appears that ep.net is authoritative 
> for 233.in-addr.arpa and therefore they would need to delegate these.   
> I tried contacting them a couple of times in 2004, but never received a 
> response.
>
> Does anyone else see value in having these delegated to their servers 
> ?   The reason I want to do this is that I'd like to leverage our 
> existing process for requesting static IPs (ie sending a request to our 
> DNS admins) to assign multicast group addresses.   It would be nice 
> (although probably not absolutely required) if we could insert 
> in-addr.arpa entries for them.

i have gotten two requests from campus research units to have GLOP
addresses "dedicated" to their use, in both cases rDNS entries were
included in the request. fwiw, the earlier request was years ago
(that's what prompted me to request the delegation), the later
request was just 2 months ago. go figure. i guess this has some
utility, but it certainly is not frequently requested.

ken