# call args: ['ssh','-o','CheckHostIP no','-o','ConnectionAttempts 2','-o','ForwardAgent yes','-o','HashKnownHosts no','-o','StrictHostKeyChecking=no','-o','VerifyHostKeyDNS no','-o','UserKnownHostsFile /dev/null','-o','ConnectTimeout 15','-o','HostbasedAuthentication no','-o','ChallengeResponseAuthentication no','-o','RhostsRSAAuthentication no','-o','GSSAPIAuthentication no','-vvv','-o','PasswordAuthentication yes','-o','PubkeyAuthentication yes','-o','PreferredAuthentications=publickey,password','-o','NumberOfPasswordPrompts=2','-o','ProxyCommand=ssh root@192.168.1.1 nc %h 22','-o','ServerAliveInterval=30','-x2MN','-o','NumberOfPasswordPrompts=1','-o','PreferredAuthentications=keyboard-interactive,password','-S','/root/.libnet-openssh-perl/root-XXXXX','-l','root','10.20.30.40','--']