Don't worry, it took me a long time to figure it out too. What you would need to enter is this
PING6(56=40+8+8 bytes) 2001:470:c27d:e000:20c:29ff:fe26:51b7 --> 2001:470:1f05:6db:382a:5450:30d8:3c49
16 bytes from 2001:470:1f05:6db:382a:5450:30d8:3c49, icmp_seq=0 hlim=57 time=84.775 ms
16 bytes from 2001:470:1f05:6db:382a:5450:30d8:3c49, icmp_seq=1 hlim=57 time=34.591 ms
^C
--- 2001:470:1f05:6db:382a:5450:30d8:3c49 ping6 statistics ---
2 packets transmitted, 2 packets received, 0.0% packet loss
round-trip min/avg/max/std-dev = 34.591/59.683/84.775/25.092 ms