Thursday, October 28, 2010

Incorrect IP address showing up in DNS

Problem
Windows 2003 server at a remote office has two network cards, one for general traffic and another one used with a network sniffer that was also loaded on the server if we need to track down a network hog issue.  The problem was that the NIC used for the sniffer auto-registered with DNS and sometimes would "advertise" that IP address and not the desired static IP address of the server.



Solution
Drilled into the TCP/IP properties of the sniffer NIC, went into Advanced options, then un-checked "Register this connection's address in DNS".  Did a IPCONFIG /FLUSHDNS on my workstation then did a PING to the DNS name.  Now the IP address was correct (the static IP, not the DHCP IP address on the sniffer card).

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Please let me know if this helped you out, or if you would like to submit other suggestions or correct something I may have mis-stated.

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Science Fiction Author / Vice President of Technology for The Christman Company