We have migrated all our domain controllers from Windows Server 2003 to Windows Server 2008 R2 and reduced tthe total number of domain controllers from 5 to 3. All domain controllers use AD integrated DNS. We still need to map the DNS configuration of the Linux servers, so we do not yet know which domain controller they use and if they use a DNS server which has been decommissioned. So to make sure that all DNS queries are still resolved we added the IP addresses of the decommissioned domain controllers to one domain controller (which has three ip addresses configured). To prevent the DNS registration of the two supplement IP address i added a second nic to the domain controller and disabled dns registration for those ip addresses.
I saw that although DNS registration for those IP addresses, the IP addresses are still registered in DNS. I have tried several registry settings to disable the registration of those IP addresses but they keep registering.
HKLM/CurrentControlSet\Services\TCPIP\Parameters
DisableDynamicUpdate value 1
No luck
HKLM/CurrentControlSet\Services\Netlogon\Parameters
DnsAvoidRegisterRecords (Reg_Multi_SZ) LDAPIPADDRESS
No Luck
HKLM/CurrentControlSet\Services\Netlogon\Parameters
DNSRegisterARecords Value 0
No Luck
Anyone any idea?
I know multihomming a domain controller is a bad idea, but it is only temporarily and that is why i want that the domain controller does not register the two additional IP addresses.