def set_virt_bridge(self, vbridge):
 if ((vbridge is None) or (vbridge == '')):
  vbridge = self.settings.default_virt_bridge
 self.virt_bridge = vbridge

def set_virt_bridge ( self , vbridge ) : if ( ( vbridge is None ) or ( vbridge == '' ) ) : vbridge = self . settings . default_virt_bridge self . virt_bridge = vbridge
the default bridge for all virtual interfaces under this profile .