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HostMonitor
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.. py:function:: HostMonitor.__init__ (subnet="192.168.1.0/24",freq=10.0)
    Create a host monitor with a specified subnet to search and a specified frequency to check
.. py:function:: HostMonitor.check()
    Run a check for the monitor once
.. py:function:: HostMonitor.start()
    Async run a check for the monitor every freq seconds