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6to4
6to4 is one mechanism to establish automatic IPv6 in IPv4 tunnels and to enable complete IPv6 sites communication. The
only thing a 6to4 user needs is a global IPv4 address.
6to4 may be used by an individual host, or by a local IPv6 network. When used by a host, it must have a global IPv4 address
connected and the host is responsible for encapsulation of outgoing IPv6 packets and decapsulation of incoming 6to4
packets. If the host is configured to forward packets for other clients, often a local network, it is then a router.
In the diagram above, the 6to4 means there is no need to set a gateway address "automatic" tunnelling solution. The relay
server, as defined in RFC 3068, has included segments drawing on 192.88.99.0/24 used as 6to4 relay of any-cast address to
complete the 6in4 setting.
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© NetComm Wireless 2019
Figure 129 – IPv6 WAN Connection Types - 6to4
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