I checked /var/log/syslog
This just happened like 40-50 minutes after startup:
Jul 8 03:17:01 desktop1 CRON[2390]: (root) CMD ( cd / && run-parts
--report /etc/cron.hourly)
Jul 8 03:24:42 desktop1 avahi-daemon[889]: Withdrawing address record for
192.168.1.242 on eno1.
Jul 8 03:24:42 desktop1 avahi-daemon[889]: Leaving mDNS multicast group on
interface eno1.IPv4 with address 192.168.1.242.
Jul 8 03:24:42 desktop1 avahi-daemon[889]: Interface eno1.IPv4 no longer
relevant for mDNS.
And I guess this was when I disconnected the NetworkManager manually 3+ mins
later:
Jul 8 03:28:05 desktop1 NetworkManager[851]: [1499477285.4001] device
(eno1): state change: activated -> deactivating (reason 'user-requested')
[100 110 39]
Jul 8 03:28:05 desktop1 NetworkManager[851]: [1499477285.4002] manager:
NetworkManager state is now DISCONNECTING
Jul 8 03:28:05 desktop1 NetworkManager[851]: [1499477285.4356] audit:
op="device-disconnect" interface="eno1" ifindex=2 pid=1713 uid=1000
result="success"
Jul 8 03:28:05 desktop1 NetworkManager[851]: [1499477285.4362] device
(eno1): state change: deactivating -> disconnected (reason 'user-requested')
[110 30 39]
