I upgraded Windows 10 pro server, rebooted and, while server is working fine, it completely lost connectivity to any other ZeroTier-connected machines on the same network.
I reinstalled ZeroTier on 2 Windows boxes, downgraded, upgraded - to no avail.
Another machine also lost connectivity to these two.
3 Windows pro machines that used to connect to each other fine - completely lost connectivity between each other.
What could I do to remedy this?