netmiko: FileTransfer - ProxyCommandFailure

Hi Kirk,

I have written a automation taking asa_upgrade as a reference. While doing a file copy from source (linux OS) to cisco asa, I can see the file is copied but the log file is filled with messages as below

Instead of directly connecting to the switch, I am using a proxy file which contains information about the jump host, ip address etc.

ERROR:paramiko.transport:Exception: ('ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no <user>@<linux host> nc 192.168.100.100 22', 'Broken pipe')
ERROR:paramiko.transport:Traceback (most recent call last):
ERROR:paramiko.transport:  File "<workspace>/runtime/lib/python2.7/site-packages/paramiko/transport.py", line 1766, in run
ERROR:paramiko.transport:    self._channel_handler_table[ptype](chan, m)
ERROR:paramiko.transport:  File "<workspace>/runtime/lib/python2.7/site-packages/paramiko/channel.py", line 1065, in _handle_close
ERROR:paramiko.transport:    self.transport._send_user_message(m)
ERROR:paramiko.transport:  File "<workspace>/runtime/lib/python2.7/site-packages/paramiko/transport.py", line 1586, in _send_user_message
ERROR:paramiko.transport:    self._send_message(data)
ERROR:paramiko.transport:  File "<workspace>/runtime/lib/python2.7/site-packages/paramiko/transport.py", line 1566, in _send_message
ERROR:paramiko.transport:    self.packetizer.send_message(data)
ERROR:paramiko.transport:  File "<workspace>/runtime/lib/python2.7/site-packages/paramiko/packet.py", line 364, in send_message
ERROR:paramiko.transport:    self.write_all(out)
ERROR:paramiko.transport:  File "<workspace>/runtime/lib/python2.7/site-packages/paramiko/packet.py", line 284, in write_all
ERROR:paramiko.transport:    n = self.__socket.send(out)
ERROR:paramiko.transport:  File "<workspace>/runtime/lib/python2.7/site-packages/paramiko/proxy.py", line 71, in send
ERROR:paramiko.transport:    raise ProxyCommandFailure(' '.join(self.cmd), e.strerror)

any idea as to what might be causing this issue above.