Allow to use /0 netmask on IGMP Proxy edit page. Fixes #7749
Allow to use /0 netmask on IGMP Proxy edit page. Fixes #7749

NewEraCracker/pfsense,pfsense/pfsense,dennypage/pfsense,pfsense/pfsense,dennypage/pfsense,NewEraCracker/pfsense,dennypage/pfsense,dennypage/pfsense,NewEraCracker/pfsense,NewEraCracker/pfsense,pfsense/pfsense,pfsense/pfsense