Microsoft Windows allows the creation of an "IPv6-in-IPv4 point-to-point tunnel":
>netsh interface ipv6 add v6v4tunnel "My Tunnel" 192.168.1.13 22.214.171.124
My question is: what protocol is this?
netsh exposes access to other tunneling or IPv6 transition protocols:
6to4: RFC3056 - Connection of IPv6 Domains via IPv4 Clouds
isatap: RFC5214 - Intra-Site Automatic Tunnel Addressing Protocol (ISATAP)
teredo: RFC4380 - Teredo: Tunneling IPv6 over UDP through Network Address Translations (NATs)
What protocol is
The reason i ask is because there's no documentation from Microsoft; so reading an RFC will have to be my documentation.