Reverting the disable signals change

mininet/node.py

@@ -329,10 +329,7 @@ def popen( self, *args, **kwargs ):
         # Shell requires a string, not a list!
         if defaults.get( 'shell', False ):
             cmd = ' '.join( cmd )
-        old = signal.signal( signal.SIGINT, signal.SIG_IGN )
-        popen = Popen( cmd, **defaults )
-        signal.signal( signal.SIGINT, old )
-        return popen
+        return Popen( cmd, **defaults )
 
     def pexec( self, *args, **kwargs ):
         """Execute a command using popen