Answers from subzone even when superzone has a delegation elsewhere
Friesen, Don CITZ:EX
Don.Friesen at gov.bc.ca
Tue Feb 13 15:24:25 UTC 2024
Andy,
The existence of 8.f.0.f.1.f.1.0.8.a.b.0.1.0.0.2.ip6.arpa as an authoritative zone on the server has higher relevance than the delegation inside another zone. The answer comes from the authoritative zone, no need to follow the delegation.
Don Friesen
-----Original Message-----
From: bind-users <bind-users-bounces at lists.isc.org> On Behalf Of Andy Smith
Sent: Tuesday, February 13, 2024 6:46 AM
To: bind-users at lists.isc.org
Subject: Re: Answers from subzone even when superzone has a delegation elsewhere
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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
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