unRAID 6.4.0 Supermicro - X9DRD-7LN4F with 4 NICs   I have a couple of dockers that I had setup and working that I had bridged to their own IP addresses. My NICs were all bonded together in active-backup mode. I messed around with the network setting to setup some of the NICs as separate interfaces. Somewhere in this process the br0 interface was deleted/disappeared. I put everything back to the way it was before (I think), but the br0 is gone from the GUI. Here's a sample from th