same DNS server serving multiple subdomains

[Anthony Golia]

You're right it probably doesn't matter, I'm just trying to do the right
thing.  The overlap and ambiguity comes in with the PTR rec for the name
server for the subdomain DNS server:  That name server has one IP addr,
but it lives in two subdomains.  Or should it?


Joseph S D Yao wrote:
> 
> On Tue, Dec 19, 2000 at 07:51:49AM -0500, Anthony Golia wrote:
> > Yes, contiguous /24's.  But my question is what entries do I put in
> > which in-addr.arpa zone file for the subdomain DNS server.  For example,
> > if the parent DNS server is ns1.foo.com, a.b.c.1  and the subdomain DNS
> > server is a.b.d.1 and it's authoritive for sub1.foo.com and sub2.foo.com
> > domains, where stuff in sub1 and sub2 live in a.b.d and a.b.e.
> 
> If it's all the same name server, what does it matter??????????
> 
> You have one zone "c.b.a.in-addr.arpa", in which you put the names for
> the IP addresses a.b.c.*, no matter what domain they're in.  You could
> have 254 different domains, for all DNS cares!  You have another zone
> "d.b.a.in-addr.arpa" for a.b.d.*, and another zone "e.b.a.in-addr.arpa"
> for a.b.e.*.  Each of these three zones is separate and distinct, and
> contains its own information.  There is no overlap.  There is no
> ambiguity.  Why should there be?
> 
> zone "c.b.a.in-addr.arpa" {
>         type master;
>         file "zone.a.b.c";
> };
> ...
> zone.a.b.c:
> $TTL    1d
> @       IN SOA  ...
>         IN NS   ...
> 
> 1       IN PTR  www.santa-claus.com.
> 2       IN PTR  wais.memorah.net.
> 3       IN PTR  gopher.kwanzaa.org.
> ...
> 
> --
> Joe Yao                         jsdy at cospo.osis.gov - Joseph S. D. Yao
> COSPO/OSIS Computer Support                                     EMT-B
> -----------------------------------------------------------------------
> This message is not an official statement of COSPO policies.

-- 
Anthony