Hello listmates, Somehow or other my DNS services that are part of the ndjbdns-1.06-1.el7.x86_64 package would not start properly at startup. When I then start them up using systemctl: systemctl start dnscache systemctl start tinydns they start just fine. >From the log I got the following for tinydns: Oct 24 15:01:43 ns99 tinydns[1867]: tinydns: version 1.06: starting: Oct-24 2014 15:01:43 EDT Oct 24 15:01:43 ns99 tinydns[1867]: tinydns: DEBUG_LEVEL set to `1' Oct 24 15:01:43 ns99 tinydns[1867]: tinydns: DATALIMIT set to `300000' bytes Oct 24 15:01:43 ns99 tinydns[1867]: tinydns: could not bind UDP socket Oct 24 15:01:43 ns99 systemd[1]: tinydns.service holdoff time over, scheduling restart. Any idea why that would happen? Any idea how to increase the holdoff time in the configuration? The config for the service looks as follows: [root at ns99 etc]# more /usr/lib/systemd/system/tinydns.service [Unit] Description=A DNS server daemon Documentation=man:tinydns(8) Requires=network.target After=network.target [Service] Restart=always PIDFile=/var/run/tinydns.pid ExecStart=/usr/sbin/tinydns [Install] WantedBy=multi-user.target [root at ns99 etc]# I can't possibly spot anything wrong there. Any help much appreciated. Cheers, Boris.