A. Each network adapter card has a MAC address, which machines on local subnets use to talk to each other. MAC addresses are usually burned into the adapters during the manufacturing process. To overwrite a network adapter card's default MAC address, perform the following steps:
- Start the registry editor (e.g., regedit.exe).
- Navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\<network adapter>\Parameters.
- From the Edit menu, select New - String Value.
- Type a name of NetworkAddress, and press Enter.
- Double-click the new value, and enter the adapter's new MAC value.
- Click OK.
- Close the registry editor.
- Reboot the machine.
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