I had an incident the other day where a Windows 7 laptop was having ip connectivity issues as a result of a known bug in Microsoft Windows 7 32bit & 64bit. The bug appears in machines with wireless adapters where a new ip version 6to4 adapter is created on boot up or shutdown. I did an ipconfig on a machine yesterday that showed the machine had 215 Local Area Connections! I had a look around and found what the issue was but everyone who mentioned it said they had to remove each of the adapters one by one. This is fine if you only have 5 or 6, but not 215. Th solution was to use a file called devcon.exe which I got from the Windows Drivers Kit ISO. I have attached a file containing both the 32bit and 64bit executables along with a batch file to show how to execute it. Just extract the the archive to your desktop and run the batch file or alternatively open the command prompt and run it.
Note that you should run either as Administrator otherwise you may get an error saying “No devices were removed”
6to4 Batch Remover
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