Because it’s possible to access the DNS through all IP addresses of domain controller, you will see lots of A records pointed to each IP address of domain controller. That may cause some problem for client while determining the IP address of domain controller.
To resolve this, you have 2 choices:
1 Remove DNS service on some IP address. This will avoid the specified IP address is listed as an A record because it’s not possible to access the DNS through this IP any more.
But if you have to enable DNS on that IP, a public IP address for example, you may want to choose the 2nd way.
2 Create a REG_SZ key named PublishAddresses in HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\DNS\Parameters, and set value to all IP addresses that you want to listed in DNS. If you need to declare multiple IP addresses, please separate them by space. Reboot when done.
Only all specified IP addresses will be displayed as A records in this way.
This function does NOT affect the failover cluster. All IP addresses belongs to cluster will still remain existed.
Reference: http://support.microsoft.com/kb/275554
