Answers from subzone even when superzone has a delegation elsewhere

[Andy Smith]

Hi Don,

Yes.

If you want actual names to look at, these zones are both present on
the same servers:

        1.f.1.0.8.a.b.0.1.0.0.2.ip6.arpa
8.f.0.f.1.f.1.0.8.a.b.0.1.0.0.2.ip6.arpa

However, the presence of 8.f.0.f.1.f.1.0.8.a.b.0.1.0.0.2.ip6.arpa is
a mistake and in the mean time someone has changed the delegation
inside 1.f.1.0.8.a.b.0.1.0.0.2.ip6.arpa to be:

8.f.0.f NS      ns-auto.bitfolk.com.

A query for, say:

2.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.8.f.0.f.1.f.1.0.8.a.b.0.1.0.0.2.ip6.arpa. IN PTR

is answered NXDOMAIN because it does not exist inside the
8.f.0.f.1.f.1.0.8.a.b.0.1.0.0.2.ip6.arpa zone file, instead of
following that delegation to ns-auto.bitfolk.com.

Thanks,
Andy

On Tue, Feb 13, 2024 at 02:31:32PM +0000, Friesen, Don CITZ:EX via bind-users wrote:
> Andy,  You do also have the A record glue for elsewhere.example.com in the example.com zone, right?  Just checking.
> 
> Don Friesen