Fix some checks in dhcpv6 screen. Still need to validate static mappings against delegated networks
Fix some checks in dhcpv6 screen. Still need to validate static mappings against delegated networks

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