【单选题】
The network setup for this trouble ticket is shown in Figure 3.<br /> Trouble Ticket Statement<br /> DSW1 and R4 cannot ping R2’s loopback or R2’s s0/0/0/0.12 IPv6 address. Initial troubleshooting showsand R2 is not an OSPFv3 neighbor on R3.<br /> Configurationon R2<br /> ipv6 unicast-routing!<br /> ipv6 router ospf 6<br /> router-id 2.2.2.2!<br /> interface s0/0/0/0.23<br /> ipv6 address 2026：：1：1/122<br /> ConfigurationR3<br /> ipv6 unicast-routing!<br /> ipv6 router ospf 6<br /> router-id 3.3.3.3!<br /> interface s0/0/0/0.23<br /> ipv6 address 2026：：1：2/122<br /> ipv6 ospf 6 area 0<br /> <img src="https://nimg.ppkao.com/2018-07/tangxueping/2018072416454938115.jpg?sign=db380b5c654422fc03dd2b2470a
A、Add ipv6 ospf 6 area 0 under S0/0/0/0.23 on R2
B、Add ipv6 ospf 6 area 6 under s0/0/0/0.23 on R2
C、Remove IPv6 address from s0/0/0/0.23 on R2
D、Enable IPv6 routing on s0/0/0/0.23 on R2
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