Empty authority and additional sections in Dns answers

[Kevin Darcy]

Jonathan de Boyne Pollard wrote:

>DB> As far as you know, is there the possibility to configure 
>DB> Bind [...] so that it will respond limiting the answer to 
>DB> Header, Questions and Answer, emptying the content of 
>DB> Authority and Additional sections? 
>
>That would be a daft thing to do, as it would change the semantics of several
>kinds of response, including referrals, and would remove important information
>from empty answers and negative answers.
>
It's not so daft. The "minimal-responses" BIND option was created for 
this kind of thing, and of course still *includes* Authority and/or 
Additional section information, where that information is required by 
the RFCs.

><URL:http://perl.plover.com./Questions3.html>
>
>Describe your actual goal.
>
People usually want to do this because they're trying to mix an 
internal-root architecture with a forwarding architecture, and find that 
their internal caching servers keep getting "poisoned" with Authority 
and Additional data for external servers they can't reach. The 
"minimal-responses" option *might* be able to help with this, although 
I've had no real reason to test it, and I more-or-less agree with you 
that it would be better for the original poster to step back and try to 
explain what it is that they are trying to accomplish.

- Kevin