Since https://redmine.pfsense.org/issues/1835 got exactly nowhere for the past 4 years, the input should be properly validated, instead of allowing people to configure nonfunctional/broken nonsense.
P.S. If you don't plan on fixing the above-linked feature for 2.3, let me know and I'll do the same for 2.3
Properly validate IPv4 for UPnP - RELENG_2_2
Since https://redmine.pfsense.org/issues/1835 got exactly nowhere for the past 4 years, the input should be properly validated, instead of allowing people to configure nonfunctional/broken nonsense.
P.S. If you don't plan on fixing the above-linked feature for 2.3, let me know and I'll do the same for 2.3