Teredo is a method of tunneling IPv6 packets over IPv4 that is capable of providing direct connections even in situations where both ends are behind NAT gateways. The efficiency of virtual PeerToPeer networks greatly benefits from this capability.
However, it does require that
You can use Miredo's client mode to implement Teredo on Linux or FreeBSD, provided your Kernel has IPv6 support.
Notes:
ipv6 setup netsh interface ipv6 set teredo client
Note: if you are on a MicrosoftWindows domain you must substitute client for enterpriseclient.
Now you should be able to use VoIP and P2P applications that support IPv6 as if you had a realworld IP address.
netsh interface ipv6 show teredo
5 pages link to Teredo:
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