Static IP gateway does not upgrade from 1.2.x to 2.0
If you have a 1.2.3 install with WAN configured with a static IP, the gateway does not upgrade to 2.0.
This used to work, but after all of the recent dynamic gateway work it seems this bug slipped in.
The gateway tag under wan was still the old IP value, post-ugprade:
After adding a gateway in the GUI and then setting the WAN gateway appropriately, it worked. (As expected)