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I have a Server 2008 R2 box running Hyper-V, hosting VM's. I have 4 NIC's set up - the primary network NIC, 1 NIC for the SAN, and 2 NIC's for the virtual machines. The 2 NIC's for the virtual machines continue to register in DNS despite having the Register this Connection in DNS checkbox cleared. I am running a Windows Server 2003 Domain with AD-Integrated Zones.

Even after I delete the A records for the 2 NIC's for the virtual machines, they continue to re-appear in DNS.

I am not sure how to stop this behavior.

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3 Answers

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Your DHCP server may be configured to register them on their behalf.

http://technet.microsoft.com/en-us/library/ee941150%28WS.10%29.aspx

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DHCP is being served up by switches, not Windows. Thanks. – Christopher Oct 4 '10 at 16:28
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Palm to forehead. I rebooted the Server 08 box and the unwanted A records disappeared from DNS.

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FYI, you could also just restart the DNS Client service instead of a full reboot.

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