Unknown host: www.defensiblenetworks.com
Exception in thread <mpclib.MPCHost object at 0x2aed5f8bcdd0>:
Traceback (most recent call last):
  File "threading.py", line 460, in __bootstrap
    self.run()
  File "/home/illsci/mpc-python2.5/mpclib.py", line 202, in run
    client.close()
  File "/usr/lib/python2.5/site-packages/paramiko/client.py", line 297, in close
    self._transport.close()
AttributeError: 'NoneType' object has no attribute 'close


LINE 202:

        finally:
            client.close()
            self.threadlimit_lock.release()
            self._timer.cancel()