How to override an A record

[Bill Sandiford]

Thanks David:

I'm not worried about resolution of further subdomains below 
www.foo.bar.com.  My problem is that I am worried about other A records (or 
records of other types) in the foo.bar.com domain.  For example, I want to 
override a single A record www.foo.bar.com  but I still want the A record 
for say, www2.foo.bar.com to resolve through normal channels from the true 
authoritive DNS server.

Bill

"David Nolan" <vitroth+ at cmu.edu> wrote in message 
news:e98cpg$1f5k$1 at sf1.isc.org...
>
>
> --On Friday, July 14, 2006 09:58:21 -0400 Bill Sandiford
> <sysop at interlinks.net> wrote:
>
>
>> I need to know how to place a record for www.foo.bar.com into my DNS
>> servers  without breaking the lookups for all other records in that
>> domain and any  subdomains.
>>
>
> Configure your server such that www.foo.bar.com is a domain, with a single
> A record
> for the domain name.  If you need baz.www.foo.bar.com to point back to the
> original servers you've got a harder problem.  You could put NS records in
> for known subdomains, but that doesn't guarantee everything will work.  It
> might be possible to solve that with a wildcard NS record, if thats even
> legal....
>
> It should be obvious that this is a hack, but its about the best you can 
> do
> without a transparent proxy of some form, which wouldn't be solving it via
> DNS.
>
> -David Nolan
> Network Software Designer
> Computing Services
> Carnegie Mellon University
>
>