Fix DHCPv6 lease deletion. Fixes #2726
Fix DHCPv6 lease deletion. Fixes #2726

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