Fix #3079, add a section for DHCPv6 Server backup
Fix #3079, add a section for DHCPv6 Server backup

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