Additional IPsec bypass rules input validation
Trying to save the save the IPSec Advanced Settings page, even without making any changes, results in an input error unless you have added extra IPsec bypass subnets:
The following input errors were detected: /32 is not valid source IP address for IPsec bypass rule /32 is not valid destination IP address for IPsec bypass rule
That happens even with 'Additional IPsec bypass' unchecked. To get past that you need to check that, add some valid IPv4 subnets and uncheck it again.
2.5.0-DEVELOPMENT (amd64) built on Tue Oct 06 12:54:27 EDT 2020 FreeBSD 12.2-STABLE