The way to get around this is you can configure DHCP’s Option 081 to update the record for all client, no matter if the client asks or not. If DHCP is on a Windows 2008 R2 DC, to protect the DC when using the Dns Update Proxy group, you must secure the group by running: dnscmd /config /Open Acl On Proxy Updates 0 Using “DHCP Name Protection.” will register A and PTR record on behalf of a client, and will prevent a workstation (non-Windows) Name Squatting, meaning using a name that another machine (non-Windows or Windows) client that DHCP already registered , from registering it’s name.
Microsoft dhcp not updating dns records
Despite it being a DHCP Option, it’s not found in a DHCP server, scope or class option. You must delete them manually to allow DHCP to take care of all new records moving forward. Quoted from the following link: “Name squatting occurs when a non-Windows-based computer registers in Domain Name System (DNS) with a name that is already registered to a computer running a Windows® operating system.
Also, it will allevaite another issue – If DHCP is on a DC, it will not overwrite the original host record for a machine getting a new lease with an IP previoulsy belonging to another host. The use of Name Protection in the Windows Server® 2008 R2 operating system prevents name squatting by non-Windows-based computers. There are some misconceptions prompting fears that Scavenging will remove everything in your zone, includind servers.
Ace Fekay, MCT, MVP, MCITP EA, Exchange 2010 Enterprise Administrator, MCTS Windows 2008, Exchange 2010 & Exchange 2007, MCSE 2003/2000, MCSA Messaging 2003 Microsoft Certified Trainer Microsoft MVP: Directory Services Active Directory, Exchange and Windows Infrastructure Engineer Compiled 4/2006, recompiled 7/2009, & 1/4/201011/30/2011 – added DHCP credentials and DHCP/DNS tab properties screenshots.3/10/2012 – Added enabling DNS scavenging screenshots.8/22/2012 – Verified with a Microsoft enginner, we need to use the Dns Update Proxy group and configure credentials to work, not one or the other. Also fixed missing screenshots8/3/2012 – Additional info about DHCP Name Protection and that it requires Credentials, Dns Update Proxy, but more so to secure the Dns Update Proxy group .
When a client shuts down, and later returns past the lease time, it may get a different IP address.
Worse yet, if things start disappearing unexpectedly you don’t want to go hopping from server to server looking for 2501 events.” For more specifics, and to not duplicate Josh Jones’ efforts, please read his blog for specific info – “Don’t be afraid of DNS Scavenging“ Don’t be afraid of DNS Scavenging, Josh Jones [MSFT], PM 3.https://qis15w.sn2.livefilestore.com/y1p Bw ESri4t7Ru2PHdykn2_l Jm6yx E_Qej QVUZP1ROd Pq End6Kenfqy Hr YAt U8Vori8Wy El UTu_3Aj APe6eg ZIy K6Fu O_y Rl JU8/3. 8.https://qis15w.sn2.livefilestore.com/y1p PWl VIC7s DUQkjxin OJh T0n EGJRi4Y_Gctkg_inp2g3Zi MJMSLM16uz_e7GQPEJ7z Fqnx2T03n0e Rny Zu F8m3Dudp0kd APQf G/8. You must be patient)::“The Scavenging Period is how often this particular server will attempt to scavenge.