Comment 4 for bug 1872979

daemon.log's collectd logs start reporting network plugin starts reporting sendto errors in the minutes leading up to the traceback.

First indication of network failures are here and blocks of this repeat up to the coredump ~2 minutes from now

32758 2020-04-12T02:45:13.000 controller-0 collectd[2520]: err network plugin: sendto failed: Network is unreachable. Closing sending socket.
32759 2020-04-12T02:45:13.000 controller-0 collectd[2520]: err network plugin: sendto failed: Network is unreachable. Closing sending socket.
32760 2020-04-12T02:45:13.000 controller-0 collectd[2520]: err network plugin: sendto failed: Network is unreachable. Closing sending socket.
32761 2020-04-12T02:45:13.000 controller-0 collectd[2520]: err network plugin: sendto failed: Network is unreachable. Closing sending socket.
32762 2020-04-12T02:45:13.000 controller-0 collectd[2520]: err network plugin: sendto failed: Network is unreachable. Closing sending socket.
32763 2020-04-12T02:45:13.000 controller-0 collectd[2520]: err network plugin: sendto failed: Network is unreachable. Closing sending socket.

Then continued failure logs just leading up to the ultimate coredump

2020-04-12T02:47:39.000 controller-0 collectd[2520]: err network plugin: sendto failed: Network is unreachable. Closing sending socket.
2020-04-12T02:47:39.000 controller-0 collectd[2520]: err network plugin: sendto failed: Network is unreachable. Closing sending socket.

2020-04-12T02:47:39.161 controller-0 collectd[2520]: info *** Error in `/usr/sbin/collectd': double free or corruption (!prev): 0x00007f53ac00fde0 ***
2020-04-12T02:47:39.161 controller-0 collectd[2520]: info ======= Backtrace: =========

The last log above looks particularly bad. 'double free or corruption' followed by the coredump