Removing redundant tunnel interfaces in Vista

In Windows Vista the IPv6 stack is enabled by default, causing the creation of an IPv6 tunnel interface for each IPv4 interface installed in the system. If you don’t need IPv6, you can disable it, improving e.g. the clarity of ipconfig output.

Here is what you need to do to disable the IPv6 stack in Windows Vista:

  1. Run the Registry Editor.
  2. Navigate to the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\tcpip6\Parameters key.
  3. If the value DisabledComponents doesn’t exist in that key, create it (DWORD (32-bit) Value).
  4. Set the DisabledComponents value to 255 (decimal).
  5. After rebooting the tunnel interfaces should disappear from the system.

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