liujh@liujh-pc:~$ ssh -l firefly 192.168.3.100
ssh: connect to host 192.168.3.100 port 22: No route to host
liujh@liujh-pc:~$
liujh@liujh-pc:~$ ssh -l firefly 192.168.3.101
Connection closed by 192.168.3.101 port 22
liujh@liujh-pc:~$ ssh -l firefly 192.168.3.101
Connection closed by 192.168.3.101 port 22
liujh@liujh-pc:~$