After performing a restart, TrueNas restarts the machine but seems to come online for a short period and then restarts again. It may do this a few times before successfully coming online.
It may be NIC related as attaching a monitor showed an OK boot.
When TrueNas does restart and the UI is accessible I'm told that I've had an unscheduled restart.
I've attached debug and a screenshot of ping for the time.
Reverting back to 12.0-U1.1 solves the problem.