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[OT] Interesting Windows IP issue

That is really odd. Usually, when a network card is unable to obtain a DHCP 
address, it defaults to a, which is Microsoft's default. 

I have seen similar behavior with DHCP at work, where the host has a IP address 
issued by DHCP, but it is conflicting with another node on the network with the 
same address. And the host refuses to release the address. 

One place to search is for the Assigned IP is under 
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\..\Parameters\TCPIP. Hit F3 
again. There is another Registry Entry storing it under the  
 Hit F3 again and repeat above.  You may be able to remove the key under 
Services where the IP address is stored and attempt to do a IPCONFIG/Release and 
Renew. Microsoft tends to store stuff under multiple locations.

Good luck.

From: Jerry Feldman <gaf-mNDKBlG2WHs at>
To: Boston Linux and Unix <discuss-mNDKBlG2WHs at>
Sent: Sat, January 22, 2011 10:30:00 AM
Subject: [OT] Interesting Windows IP issue

Yesterday at work, one of my coworkers wanted to make a presentation
from his company laptop (Windows XP). For some reason his IP address was
showing 192.168.x.x, not the internal company 10. address. I used my
Ubuntu netbook to make sure the CAT5E cable was ok, and I certainly got
a valid 10. address. We moved to another office because the lighting was
better, and the same thing. We even rebooted his computer. Somehow it
wanted to remain at 192.168. Our cables are plugged directly into a
switch that plugs into our firewall. After a while we finally got the
thing up and running on the corporate network. Note that I had even done
a IPCONFIG /release and IPCONFIG /renew. I've seen this before on his
previous laptop. Apparently he does something at home, but when I look
at properties it shows DHCP.

Jerry Feldman <gaf-mNDKBlG2WHs at>
Boston Linux and Unix
PGP key id: 537C5846
PGP Key fingerprint: 3D1B 8377 A3C0 A5F2 ECBB  CA3B 4607 4319 537C 5846

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