I'm able to ping my Ubuntu box via command: (where c2h2ttt is listed in /etc/hosts) c2h2@c2h2crawler:~/ttt$ ping6 -I eth1 c2h2ttt PING c2h2ttt(c2h2ttt) from fe80::21b:21ff:fe22:e865 eth1: 56 data bytes 64 bytes from c2h2ttt: icmp_seq=1 ttl=64 time=10.3 ms 64 bytes from c2h2ttt: icmp_seq=2 ttl=64 time=2.06 ms 64 bytes from c2h2ttt: icmp_seq=3 ttl=64 time=1.33 ms And when I try ssh -6 c2h2ttt it sho