This is the only thing i see prior
Oct 11 20:16:00 nyc-fw1-inet sshguard[69504]: Exiting on signal. Oct 11 20:16:00 nyc-fw1-inet sshguard[77474]: Now monitoring attacks. Oct 11 20:35:30 nyc-fw1-inet check_reload_status[666]: Linkup starting $e6000sw0port3 Oct 11 20:35:30 nyc-fw1-inet kernel: e6000sw0port3: link state changed to DOWN Oct 11 20:35:31 nyc-fw1-inet php-fpm[20159]: /rc.linkup: Hotplug event detected for WAN(wan) dynamic IP address (4: dhcp) Oct 11 20:35:31 nyc-fw1-inet php-fpm[20159]: /rc.linkup: DEVD Ethernet detached event for wan Oct 11 20:35:33 nyc-fw1-inet syslogd: sendto: Network is down Oct 11 20:35:33 nyc-fw1-inet syslogd: sendto: Network is down Oct 11 20:35:33 nyc-fw1-inet syslogd: sendto: Network is down Oct 11 20:35:33 nyc-fw1-inet syslogd: sendto: Network is down Oct 11 20:35:33 nyc-fw1-inet syslogd: sendto: Network is down Oct 11 20:35:33 nyc-fw1-inet syslogd: sendto: Network is down Oct 11 20:35:33 nyc-fw1-inet syslogd: sendto: Network is down Oct 11 20:35:33 nyc-fw1-inet syslogd: sendto: Network is down Oct 11 20:35:33 nyc-fw1-inet syslogd: sendto: Network is down Oct 11 20:35:33 nyc-fw1-inet syslogd: sendto: Network is downI do see that the LAN side had a Hotplug event as well. Looking at the timestamps the LAN side event happened more or less at the same time as the WAN side.
To me this indicates either