 |  |
On 05/03/01 at 13:36, Jim Grisham wrote:
Re: Reverse DNS
From: Global Homes Webmaster
Date: Thursday, May 3, 2001
Time: 6:09:12 pm
> >This is less than a full Class C block, so your ISP (UUNet) will need
> >to do a classless delegation to your name server. Exactly how you set
> >it up depends on how they do the delegation (there's more than one
> >way to skin this cat...).
> >
> >FWIW, it doesn't look like the delegation has been made yet. Starting
> >from the root servers and following NS records, I hit a dead end at
> >
> >200.95.63.in-addr.arpa nameserver = auth40.ns.uu.net
> >200.95.63.in-addr.arpa nameserver = auth62.ns.uu.net
> >
>
> I couldn't find anything in my copy of DNS and Bind(3rd ed., it's
> three years old) regarding the delegation of classless reverse
> domains.
It's not in DNS & BIND. There's at least one RFC that covers it, the number(s)
of which escapes me at the moment -- Chris Buxton will be able to point you to
the right one(s).
> The IP address space to be delegated is 64.198.226.128/26, so what
> would need to be done on the current authority(server 1) for
> 64.198.226.0/24. What needs to be done on the delegatee server(server
> 2)?
Again, it depends on exactly how UUNet chooses sets up the classless
delegation.
> Can this be done in QuickDNS on both servers?
Yes. Your end of it (i.e. after the zone is delegated to you) can be done with
QDNS.
> Now, what if server 2 is the primary lookup DNS for a block of
> computers. Will DNS queries from those computers be able to see the
> parts of 64.198.226.0/24 that were not delegated? (Those would be
> 64.198.226.0/25 and 64.198.226.192/26, right?)
UUNet would retain the delegation for those zone, so you should be able to get
whatever DNS info (if any) they've got on their name servers. Of course, if
they delegate the zone to another customer, you'd query that customers name
servers.
Christopher Bort
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