Folks,
 I have 3 Linux systems, one running F31 and 2 running F34.  On one of the F34 systems I have a local DNS server running.  This has worked fine in the past, but now I'm seeing strangeness on the 2 F34 systems.

I added a host to the DNS server for normal lookup and reverse lookup.  On the F31 system both:

host centos8-opstcore-vm.homenet172-16-96.com

and

host 172.16.96.20

work. The first returns 172.16.96.20 and the second returns centos8-opstcore-vm.homenet172-16-96.com.

On the F34 which is the DNS server the first works, but the second fails with:

Host 20.96.16.172.in-addr.arpa. not found: 3(NXDOMAIN)

On the other F34 system I get:

host 172.16.96.20

;; connection timed out; no servers could be reached

The interface has the DNS server pointing to the correct system. If I run:

nslookup
> server 192.168.10.66
Default server: 192.168.10.66
Address: 192.168.10.66#53
> 172.16.96.20
20.96.16.172.in-addr.arpa    name = centos8-opstcore-vm.homenet172-16-96.com.
>

Then it works.

What do I need to do on F34 systems to get DNS lookups working?

Any help is appreciated.

Paolo

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