题目内容:
A. An automatic 6to4 tunnel does not req uire dual - stack (IPv4 and IPv6) routers at the tunnel endpoints.B. An automatic 6to4 tunnel allows multiple IPv4 destinations.
C. A manually configured IPv6 in IPv4 tunnel allows multiple IPv4 destinations.
D. A manually configured IPv6 in IPv4 tunnel does not require dual- stack (IPv4 and IPv6) routers at the tunnel endpoints.
参考答案: