Not all equipments support IPv6, and therefore cause problems - limited access, often network disconnections, etc.

In Vista, IPv6 is enabled by default, but given the current status - a very tiny part uses IPv6 - you should be able to disable its support without any disadvantages at all.

So here’s how to do it.

1. Start Menu
2. Right click on Computer, select Manage
3. Left Side List: click on Device Manager
4. Application Menu: View -> Show hidden devices
5. In the main list, under Network Adapters, you should now see 6to4, isatap.[..], Teredo Tunneling Pseudo-Interface
6. Right click on each of them, and select Disable

All set. A computer restart would be nice though. Good luck!

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