I was working with DNS Scavenging and turned it off temporarily as per below document.
http://blogs.technet.com/b/networking/archive/2008/03/19/don-t-be-afraid-of-dns-scavenging-just-be-patient.aspx
Now my Reverse Lookup zone is not being updated from the forward lookup zone in Active Directory.
Do I need to change my DNS settings under DHCP to dynamically update DNS A and PTR records for DHCP clients that do not request updates. I already have enable DNS dynamic updates according to the settings below.
Always dynamically update DNS A and PTR records.
Discard A and PTR records when lease is deleted.
btw I was unable to find Option 081 as other articles mentioned.