open_ex: ['ssh','-V'], referer: http://127.0.0.1/test_ssh.pl io3 mloop, cin: 0, cout: 1, cerr: 0, referer: http://127.0.0.1/test_ssh.pl io3 fast, cin: 0, cout: 1, cerr: 0, referer: http://127.0.0.1/test_ssh.pl stdout, bytes read: 60 at offset 0, referer: http://127.0.0.1/test_ssh.pl io3 fast, cin: 0, cout: 1, cerr: 0, referer: http://127.0.0.1/test_ssh.pl stdout, bytes read: 0 at offset 60, referer: http://127.0.0.1/test_ssh.pl leaving _io3(), referer: http://127.0.0.1/test_ssh.pl waiting for slave, timeout: 10, remaining: 10, sleep: 1, referer: http://127.0.0.1/test_ssh.pl _waitpid(27399) => pid: 27399, rc: 0, err: Interrupted system call, referer: http://127.0.0.1/test_ssh.pl OpenSSH version is 7.2p2, referer: http://127.0.0.1/test_ssh.pl ctl_path: /tmp/.net_ssh/monitor-192.168.0.12-27394-236253, ctl_dir: /tmp/.net_ssh/, referer: http://127.0.0.1/test_ssh.pl set_error(0 - 0), referer: http://127.0.0.1/test_ssh.pl call args: ['ssh','-o','ConnectTimeout=10','-o','ServerAliveInterval=10','-o','ServerAliveInterval=30','-o','ControlPersist=no','-2MNx','-o','BatchMode=yes','-i','/tmp/.5SFO0niU.27394.key','-o','PreferredAuthentications=publickey','-S','/tmp/.net_ssh/monitor-192.168.0.12-27394-236253','-l','monitor','192.168.0.123','--'], referer: http://127.0.0.1/test_ssh.pl master state jumping from _STATE_START to _STATE_AWAITING_MUX, referer: http://127.0.0.1/test_ssh.pl file object not yet found at /tmp/.net_ssh/monitor-192.168.0.12-27394-236253, state:_STATE_AWAITING_MUX, referer: http://127.0.0.1/test_ssh.pl DESTROY(Net::OpenSSH=HASH(0x5db2ac0), pid: ), referer: http://127.0.0.1/test_ssh.pl set_error(1 - aborted), referer: http://127.0.0.1/test_ssh.pl master state jumping from _STATE_START to _STATE_GONE, referer: http://127.0.0.1/test_ssh.pl