I have 4 VMs all running bridged adapters. They ran with no problem in 16.0, after upgrade they all (at the same time) drop network randomly. I don't have proof but it might happen at the top of the hour. I need to take a closer look.
I can shutdown guests, reboot host, and start guests and everything works for an undetermined amount of time before happening again.
I've looked at guest logs, host logs, firewalls, and can't see anything alarming. Since it happens to all VMs and the host is fine, it makes me think the issue is isolated to the bridge.
The only other thing that has changed in this duration was adding an IPsec VPN tunnel to GCP, but I wouldn't imagine BGP could cause something like this.
