MFC [16853] Fix opt interface lookup
MFC [16853]
Fix opt interface lookup

BlackstarGroup/pfsense,pfsense/pfsense,dennypage/pfsense,NOYB/pfsense,ch1c4um/pfsense,pfsense/pfsense,phil-davis/pfsense,brunostein/pfsense,ch1c4um/pfsense,NewEraCracker/pfsense,phil-davis/pfsense,pfsense/pfsense,ptorsten/pfsense,jxmx/pfsense,BlackstarGroup/pfsense,BlackstarGroup/pfsense,ch1c4um/pfsense,NOYB/pfsense,brunostein/pfsense,brunostein/pfsense,NewEraCracker/pfsense,NOYB/pfsense,ptorsten/pfsense,jxmx/pfsense,NewEraCracker/pfsense,dennypage/pfsense,pfsense/pfsense,dennypage/pfsense,NewEraCracker/pfsense,phil-davis/pfsense,phil-davis/pfsense,BlackstarGroup/pfsense,jxmx/pfsense,ptorsten/pfsense,ch1c4um/pfsense,dennypage/pfsense