per-zone query-source on recursive resolver

[Tony Finch]

Erich Eckner <bind at eckner.net> wrote:
>
> I'm undecided whether they're authoritative or not. On one hand, they are
> distributed via DHCP as default DNS servers, speaking for "recursive", on
> the other hand, they have matching SOA records (and I think, that means,
> they're authoritative) - maybe they're both?

If they are advertised via DHCP they have to be recursive, otherwise stub
resolvers would not work :-) The key thing to look for is the RA bit
(recursion available) in answers you get from the server. The servers can
also be authoritative with AA=1 (authoritaive answer) for some zones, but
that won't prevent you from using them as forwarders.

For choosing between the alternatives I should have been more precise and
said you have to use static-stub instead of forwarding if the target
server is "authoritative-only" (i.e. RA=0). If you use static-stub the
target server must be authoritative for the zone, regardless of whether it
offers recursion.

Tony.
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