frr 1.1.0_12 package won't save OSPF settings unless entry exists in OSPF Networks
After upgrading to frr 1.1.0_12 package in a lab pfSense I went in to OSPF settings to experiment with injecting kernel routes and changing metrics etc. Upon trying to save the configuration, I get an error:
OSPF Network must be an IPv4 subnet
AreaID must be an IPv4 address
These are configured under OSPF Networks, which is labelled as deprecated in favour of OSPF Interface settings. In previous versions of this package it was not necessary to enter anything here.
In fact you can recreate the issue just by clicking save on this page without even making any changes.