Greg Ferro’s post about how Microsoft Teredo is a suboptimal networking solution made me think it’s time to update my old post on how to disable Teredo in Windows 7 and in Windows 8. For the record, I agree — I’ve had serious problems with it conflicting with my native IPv6 connectivity.
1. Open a command prompt with administrator privileges (Start->Accessories->right click on Command Prompt, choose Run as Administrator):
2. Issue the command:
netsh interface teredo set state disabled
3. You may need to reboot, depending on your version of Windows.
If you wish to re-enable Teredo at some point you can issue the command:
netsh interface teredo set state type=default