Same server 2 DNS records

Hello.
I have a Windows Server 2012 R2 Core that have 2 NICs.
Its has a NIC in the Local servernet (192.168.2.15) , and a NIC in the DMZ net (192.168.3.10).
My issue is, that the server is registrering 2 addresses in the DNS record on the Domain Controller.
I only want the Servernet NIC (192.168.2.15) in the DNS record.
I know that you under the local NIC can disable, that a interface should register in the DNS.
My only issue is, that im running the Core version - so i dont have access to this...
I have tried several netsh commands, but niether of them seems to Work.
How should i "fix" this issue?
Any help would be appreciated :)
Datatechnician

easy way would be netsh:
netsh interface ipv4 set dnsserver source=static address=192.168.1.10 register=none
http://technet.microsoft.com/en-us/library/cc738592(v=ws.10).aspx#BKMK_5
or  you could even configure it through registry
HKLM\SYSTEM\CurrentControlSet\services\Tcpip\Parameters\Interfaces\<YOURGUID><interface>\RegistrationEnabled to 0</interface>
MCP/MCSA/MCTS/MCITP

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