单项选择题

Which IPv6 address would you ping to determine if OSPFv3 is able to send and receive unicast packets across a link？（）

A.anycast address
B.site-local multicast
C.global address of the link
D.unique local address
E.link-local address

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B.The deployment of a IPv4-compatible tunnel requires a special code on the edge routers， but a 6to4 tunnel does not require any special code.
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CCIE系列认证综合练习

Which IPv6 address would you ping to determine if OSPFv3 is able to send and receive unicast packets across a link？（）