Improve checks when starting IOU.

gns3server/modules/dynamips/__init__.py

@@ -127,8 +127,8 @@ class Dynamips(IModule):
         Properly stops the module.
         """
 
-        #if not sys.platform.startswith("win32"):
-        #    self._callback.stop()
+        if not sys.platform.startswith("win32"):
+            self._callback.stop()
         if self._hypervisor_manager:
             self._hypervisor_manager.stop_all_hypervisors()
         IModule.stop(self)  # this will stop the I/O loop