In Windows 7, how do I disable IPv6 tunneling over IPv4?

Warning:
This contains instructions for editing the registry. If you make any error while editing the registry, you can potentially cause Windows to fail or be unable to boot, requiring you to reinstall Windows. Edit the registry at your own risk. Always back up the registry before making any changes. If you do not feel comfortable editing the registry, do not attempt these instructions. Instead, seek the help of a computing support provider.

In Windows 7, to disable IPv6 tunneling over IPv4:

  1. From the Start menu, in the Start Search box, enter regedit, and then in the Programs list, click regedit.
  2. In Registry Editor, locate and then click the following registry subkey: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip6\Parameters\
  3. Double-click DisabledComponents to modify the DisabledComponents entry.

    Note: If the DisabledComponents entry is unavailable, you must create it:

    1. In the Edit menu, point to New, and then click DWORD (32-bit) Value.
    2. Enter DisabledComponents, and then press Enter.
    3. Double-click DisabledComponents.
  4. Type any one of the following values to configure the IPv6 protocol, and then click OK:
    Value Action
    0
    Enables all IPv6 components (0 is the default setting)
    0xffffffff
    Disables all IPv6 components, except the IPv6 loopback interface
    0x20
    Makes Windows use IPv4 instead of IPv6 in prefix policies
    0x10
    Disables native IPv6 interfaces
    0x01
    Disables all tunnel IPv6 interfaces
    0x11
    Disables all IPv6 interfaces except for the IPv6 loopback interface

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This is document baeg in the Knowledge Base.
Last modified on 2016-05-25 00:00:00.

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