Refer to the exhibit for the outputs from an ASR9K router.
Why did the ping fail?
A.
The ping command is missing the ipv6 option: ping ipv6 2001:db8:10:1:10::1/128
B.
There is a problem with the IS-IS configurations
C.
The fe80::eab7:48ff:fe2c:a180 next-hop is not reachable
D.
The prefix length should be removed from the IPv6 address in the ping command:
ping ipv6 2001:db8:10:1:10::1
E.
IPv6 is not enabled on the Gi0/0/0/0 interface
F.
The IPv6 neighbor discovery protocol is not enabled on the Gi0/0/0/0 interface
Answer A.
http://www.cisco.com/c/en/us/td/docs/ios/ipv6/command/reference/ipv6_book/ipv6_10.html#wp2654545
Example
The following user EXEC example shows sample output for the ping ipv6 command:
Router# ping ipv6 2001:0DB8::3/64
After you enter the ping command in privileged EXEC mode, the system prompts you for a protocol keyword. The default protocol is IP.