On 12/18/06, Karl R. Balsmeier <[EMAIL PROTECTED]> 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 hints 
at
the possibility that somewhere in the DNS spec.

Or perhaps you're thinking of the RES_AAONLY option for the resolver
routines documented in resolver(3)?

    RES_AAONLY     Accept authoritative answers only.  With this option,
                   res_send() should continue until it finds an authoritative
                   answer or finds an error.  Currently this is not imple-
                   mented.

No one actually implements that because it would increase the load on
the DNS and the latency for applications without providing any real
benefit to them.

Philip Guenther

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