CentOS - Dec 2006 - Slightly OT: DNS -force client always use authoritative

Is there a specific way to set a name server so that clients are always 
*forced* to use an autoritative name server?

UltraDNS and some others have mentioned little features they have, but 
it only hints at the possibility that somewhere in the DNS spec. 

-karlski

> Is there a specific way to set a name server so that clients are always
> *forced* to use an autoritative name server?
>
> UltraDNS and some others have mentioned little features they have, but
> it only hints at the possibility that somewhere in the DNS spec.
Are you trying to make sure that the clients do not use cached lookups? 
If so you could use max-cache-ttl and max-ncache-ttl with a very low ttl
like 1 second.  Although then you still have a problem with the client
itself caching the lookup.

-- 
Matthew Martz
CentOS Mirror Admin
mdmartz at gflug.net

Karl R. Balsmeier wrote:
> Is there a specific way to set a name server so that clients are always 
> *forced* to use an autoritative name server?
> 
> UltraDNS and some others have mentioned little features they have, but 
> it only hints at the possibility that somewhere in the DNS spec.
I don't know what clients you are talking about but those clients need 
to be able to follow referrals. With named, you can turn off recursion 
support. It will then refer clients to the next appropriate authority 
like the root servers who will, in turn, refer them to the appropriate 
name servers and so on until an authoritative name server is reached.

I hope this is what you want.