如何在局域网内ssh到ipv6的ubuntu？

我可以通过命令来ping我的Ubuntu盒子。(c2h2ttt在/etc/hosts中列出)

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

当我尝试ssh -6 c2h2ttt时，显示：

c2h2@c2h2crawler:~/ttt$ ssh -6 c2h2ttt
ssh: connect to host c2h2ttt port 22: Invalid argument

正确的命令是什么？

在服务器端 /etc/ssh/sshd/_config 有。

ListenAddress ::
ListenAddress 0.0.0.0

我可以通过端口22上的ipv4对c2h2ttt进行ssh，netstat -lnt | grep :22是

root@c2h2think:~# netstat -lnt | grep :22
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN
tcp6 0 0 :::22 :::* LISTEN

使用了ufw，它允许端口22上的任何入站流量

root@c2h2think:~# ufw status
Status: active

To Action From
-- ------ ----
22 ALLOW Anywhere

iptables配置：

root@c2h2think:~# ip6tables -L -v -n
Chain INPUT (policy DROP 55 packets, 10758 bytes)
pkts bytes target prot opt in out source destination 
    0 0 ACCEPT all lo * ::/0 ::/0        

Chain FORWARD (policy DROP 0 packets, 0 bytes)
 pkts bytes target prot opt in out source destination 

Chain OUTPUT (policy DROP 0 packets, 0 bytes)
 pkts bytes target prot opt in out source destination 
    0 0 ACCEPT all * lo ::/0 ::/0
``` iptables配置： 

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