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單項選擇題

Which statement is true concerning 6to4 tunneling?()

A. The edge routers can use any locally configured  IPv6 address.
B. Hosts and routers inside a 6to4 site will need a special code.
C. An edge router must use IPv6 address of 2002::/16 in its prefix.
D. IPv4 traffic is encapsulated with an IPv6 header.

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