Thanks again.
>So when your system(s) try to do a reverse DNS (PTR) lookup for 193.136.66.1,
>it will actually do a PTR lookup for 1.66.136.193.in-addr.arpa. and fail
>because you don't have a copy of the >66.136.193.in-addr.arpa. zone file
>locally.
Probably. Am I supposed to, I have just 2 segments in this network (and 2
others on another work) ?
>At least my understanding is that you have a copy of your forward zone, and
>your 0-28.66.136.193.in-addr.arpa. zone. But you don't have a copy of, nor
>access to, the intermediate >66.136.193.in-addr.arpa. zone that references the
>0-28.66.136.193.in-addr.arpa. zone.
Yes! But I never heard of intermediate zone before. As far as I know, my top
domain forwards all "di.ubi.pt" requests to me and that works.
Regards
David
-----Original Message-----
From: bind-users <bind-users-boun...@lists.isc.org> On Behalf Of Grant Taylor
via bind-users
Sent: 04 November 2022 17:07
To: bind-users@lists.isc.org
Subject: Re: Reverse lookups not working when Internet connection failed.
On 11/4/22 10:54 AM, David Carvalho via bind-users wrote:
> Thanks for the replies.
You're welcome.
> My reverse zone in named.conf. My secondary dns gets it automatically
> daily, along with the "di.ubi.pt.".
ACK
> zone "0-28.66.136.193.in-addr.arpa." IN {
> allow-query { any; };
> type master;
> file "rev0.hosts";
> };
That confirms that the origin is in fact "0-28.66.136.193.in-addr.arpa."
(Save for any typo that I may have introduced.)
> I'll have to study more about some things you guys wrote. This is
> getting complicated 😉
So when your system(s) try to do a reverse DNS (PTR) lookup for 193.136.66.1,
it will actually do a PTR lookup for 1.66.136.193.in-addr.arpa. and fail
because you don't have a copy of the 66.136.193.in-addr.arpa. zone file locally.
At least my understanding is that you have a copy of your forward zone, and
your 0-28.66.136.193.in-addr.arpa. zone. But you don't have a copy of, nor
access to, the intermediate 66.136.193.in-addr.arpa. zone that references the
0-28.66.136.193.in-addr.arpa. zone.
Does that help?
Please feel free to ask additional questions.
--
Grant. . . .
unix || die
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