On Sat, 2025-04-26 at 23:05 +0200, François Patte wrote:
> Current DNS Server: 192.168.1.1
>         DNS Servers: 80.67.169.12 80.67.169.40 192.168.1.1

Having multiple DNS servers, like that, *can* be a problem.  It depends
on your use case.

The system will usually have a default server it queries for
everything, and if it doesn't respond (at all) it will try one of the
others.  If it does respond (even if it doesn't have and results), it
has answered and the others won't be queried.

If all your DNS servers do is resolve public internet addresses, and do
it well, you'll probably never notice any problems.

If you depend on *your* DNS server to answer queries about local IPs on
your LAN, which the public ones cannot do, you will strike problems if
your system starts querying the public ones.

If your system round-robins the queries, instead of always using your
preferred server, you get that problem rearing its head again and
again.
 
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