Temporary failure in name resolution on Ubuntu server 22.04.3 LTS

[Jeffrey Walton]

On Sun, Nov 26, 2023 at 4:50 AM Bo Berglund <bo.berglund at gmail.com> wrote:
>
> I recently performed a do-release-upgrade to move the server from 20.04 to
> 22.04.3 LTS. This is a non-GUI server system.
>
> Now after about a month the DNS system is broken!
> I get the error in the subject for instance wen doing:
>
> $ ping www.sunet.com
> ping: www.sunet.com: Temporary failure in name resolution

I don't think there's enough information at the moment. I think you
should show the output of `nslookup --debug` or `dig`.

Additional information that would be helpful is the IP address of your
site's DNS server, whether IPv4, IPv6 or both are being used, and your
DHCP configuration options.

> I have googled the problem and the advice I ave found is to edit the
> /etc/resolv.conf file and add the google DNS server 8.8.8.8

I would avoid Stack Overflow questions and guesses until you determine
what the problem is.

You will probably get better results with a search like
<https://www.google.com/search?q=troubleshoot+"Temporary+failure+in+name+resolution"+nslookup+dig>.

Jeff