Literally everything. SSH - everything. This is a VPS (Linode) with a Lish AJAX console that normally works even when all other networking is disabled and even it was down. I was literally blind and the only option left was to reboot each time. It took several reboots to narrow it down to a particular service.
Please let me know if there is a particular log I should look at. I've looked at the messages and syslog as well as the access and error logs for nginx and they are all missing entries during the time networking was down.
Thanks! I've been using Nginx for years barely a hiccup until this.
Bret