請參閱示例。R17 需要哪些 IPv6 配置才能成功 ping 到 R18 的 WAN 接口?
A. 口 FastEthernet0/0 no ip address duplex auto speed auto ipv6 address 2001:DB8:2::201/64 !Interface FastEthernet1/0 no ip address duplex auto speed auto ipv6 address 2001:DB8:3::201/64 ! no cdp log mismatch duplex ipv6 route 2001:DB8:4::/64 2001:DB8:4::302
B. 17# ! no ip domain lookup ip cef ipv6 unicast-routing ! Interface FastEthernet0/0 no ip address duplex auto speed auto ipv6 address 2001:DB8:2::201/64 !接口 FastEthernet1/0 no ip address duplex auto speed auto ipv6 地址 2001:DB8:3::201/64 ! no cdp log mismatch duplex ipv6 路由 2001:DB8:4::/64 2001:DB8:3::301
C. 口 FastEthernet0/0 no ip address duplex auto speed auto ipv6 address 2001:DB8:3::201/64 !接口 FastEthernet1/0 no ip address duplex auto speed auto ipv6 地址 2001:DB8:2::201/64 ! no cdp log mismatch duplex ipv6 路由 2001:DB8:4::/64 2001:DB8:5::101
D. 口 FastEthernet0/0 no ip address duplex auto speed auto ipv6 address 2001:DB8:2::201/64 !接口 FastEthernet1/0 no ip address duplex auto speed auto ipv6 地址 2001:DB8:3::201/64 ! no cdp log mismatch duplex ipv6 路由 2001:DB8:4::/64 2001:DB8:2::201