Re: Phantom name server

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I asked:

> I have a CentOS stream 8 system (C8) which runs its own internal
> name server (BIND 9). In the past, it used an external name server
> on another machine but that server has been stopped. The resolv.conf
> file on C8 has been modified to remove the reference to the old
> server and NetworkManager has been restarted. However, CUPS and
> other programs on C8 continue to send queries to the old server,
> all of which eventually time out (of course). The bogus queries to
> the old server are answered with ICMP destination/port unreachable,
> confirming that the old name server is not running. But these bogus
> queries take time and the delays are very annoying.
> 
> I've also restarted CUPS without effect. There are no references to the
> old server in /etc/named.conf, but there are references to the subnet
> it was on as there are other machines there that need to use the new
> name server. I haven't yet rebooted C8 but I'm prepared if necessary.
> 
> Is there something else I should do before rebooting C8? Is that even
> likely to solve the problem?

Aleksandar Ivanisevic wrote:

> Do you have nscd running? Try restarting that. 

Simon Matter wrote:

> Doesn't systemd do some kind of its own name resolution thing these days?
> 
> Maybe someone else can say more about this.

Thanks. But nscd is not running. Perusing all the active systemd
services, I restarted systemd-resolved and systemd-networkd but that
doesn't seem to have had any effect.
-- 
         Dave Close, Compata, Irvine CA       +1 714 434 7359
       dave@xxxxxxxxxxx              dhclose@xxxxxxxxxxxxxxxxxx
"The mind is a wonderful thing. It starts working the minute you're born
 and never stops until you get up to speak in public." -Roscoe Drummond


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