IPv6 is available to networks in a variety of ways. We make a distinction between environments with native IPv6 and those which provide IPv6 through a tunnel.
- Native IPv6: Native IPv6 describes a network that communicates to the outside via IPv6. Users with IPv4 Internet access can only access this network if the router uses one of the tunnel technologies described below.
- IPv6 via dual stack: Dual stack refers to the parallel operation of IPv4 and IPv6 in a network.
- IPv6 tunneling: If a router does not have native IPv6 Internet access, a tunnel can be used for accessing IPv6 networks.
