DisableDynamicDns for a specific Adapter

This is specific to Windows 2008.

I know there is a bunch of wizards out there that would say, you should never disable dynamic DNS for a Windows 2008 domain controller, but I have a reason: The domain controller has an iSCSI connection to a SAN. That SAN is on a private subnet that is unreachable by anyone. Yet people are getting that address as a round robin address to connect to for directory information. THIS SHOULD NEVER HAPPEN! The solution is to disable the dynamic DNS updating for that interface. Microsoft (as of this writing) didn't have a support document for anything other than 2000/2003 server. So this is what I did, and it seems to be working at the moment:

In "HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Adapters\[GUID of adapter]\" 
In "HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\[GUID of adapter]\" 

added REG_WORD DisableDynamicUpdate = 1

Finding the right GUID was easy since the IP address is listed under the Interfaces Key.