Can a named (bind) crash make a server unreachable?

giorgio79 asked:

My server recently became unreachable, and after restart a named error was the last line I found in /var/log/messages before restart:

Jun 26 00:15:06 host named[1303]: error (network unreachable) resolving 'dlv.isc.org/DNSKEY/IN': 2001:500:71::29#53
Jun 26 06:38:55 host kernel: imklog 5.8.10, log source = /proc/kmsg started.
Jun 26 06:38:55 host rsyslogd: [origin software="rsyslogd" swVersion="5.8.10" x-pid="1294" x-info="http://www.rsyslog.com"] start
Jun 26 06:38:55 host kernel: Initializing cgroup subsys cpuset

Can a named crash make a server unreachable? I doubt it, as I assume I should still be able to login with ssh via IP, but the server did not respond…So, I am trying to make heavy guesses here.

My answer:


BIND did not crash. BIND is complaining because the network is down, but it didn’t take down the network. To find the cause of the network going down, you’ll have to look elsewhere.


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