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Windows 7: Network Places remembering old IP's?!?!?!? Driving me crazy

07 Nov 2011   #1

Windows 7 RTM x86/x64
Network Places remembering old IP's?!?!?!? Driving me crazy

So, I have a class "A" IP Subnet in my home and a class "C" subnet. one is outside the "corporate" firewall and one is inside.

My Laptop wireless always loves to obtain the which is the ISA router/firewall. Obviously there is an IP conflict here because the TMG/ISA server/GATEWAY already has that..

So.. Let me get a little deeper.

This only happens after a reboot and the IP settings that it "desires" are the following:

Subnet Mask:

Now if anyone reading this thread knows... It should be....

Subnet Mask:

Should I delete the network controller, or do I have to delve into the registry to get this crap sorted out?

The Laptop ALWAYS connects to the N router but has a problem assigning the IP where it will just assign a bad IP or "first ip" in the sequence.

There are times that I need to get beyond the firewall, and I need to assign it a class "c" but I don't understand why this should be having a bearing upon future connections.

I have repeatedly reset the "arp" and DNS; to no avail.

I have typed this command at my last chance:
"netsh int ip reset c:\resetlog.txt"

If you can give me any other pointers, let me know.

My System SpecsSystem Spec

07 Nov 2011   #2

Windows 7 Ultimate SP1 64-Bit

Have a look at this tutorial in the hope it will help you: Internet Troubleshooting Guide
My System SpecsSystem Spec
07 Nov 2011   #3
Microsoft MVP

Win7 & Win8 64bit

Hi abuttino,

In addition to the great suggestion, you may use NetSetMan, you may create Profiles, Auto, Manual IP or have diff subnets.
My System SpecsSystem Spec


 Network Places remembering old IP's?!?!?!? Driving me crazy

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