BridgeChecker is the type of tool that should have been build into Windows. With this tool you can automatically disable the wireless network interface when your computer is connected to an Ethernet port and enable it back again when Ethernet port is disconnected.
This conserve IP address allocation, reduces security risks, resolves dual interface routing issues, and prolongs battery life.

It works on Windows XP, Windows Vista, and Windows 7 and requires NET 3.5 Service Pack 1
Download BridgeChecker
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