- 6to4 - Very simple network tunnel, that doesn't support NAT-routers. More Info Wiki
- Teredo - Uses external Microsoft Teredo servers to enable tunnel in network with NAT-routers. More Info Teredo
- ISATAP - Allows an internal network to use IPv6 and IPv4 side-by-side until all devices are ready to use IPv6. More Info ISATAP
These network tunnel implementations can open up to network attacks from the outside, where outsiders performs spoofing to simulate them being part of the internal network. The network tunnel implementations also introduces an overhead, as the constant translation is always in effect. More Info MS16-077
Home users that are not in transition to upgrade to pure IPv6, should consider to disable these virtual network interfaces:
Credits Mark Minasinetsh interface ipv6 6to4 set state state=disabled undoonstop=disabled
netsh interface teredo set state disabled
netsh interface ipv6 isatap set state state=disabled
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