def nvgre(version=0, vsid=0, flow_id=0):
 return gre(version=version, protocol=ether_types.ETH_TYPE_TEB, vsid=vsid, flow_id=flow_id)

def nvgre ( version = 0 , vsid = 0 , flow_id = 0 ) : return gre ( version = version , protocol = ether_types . ETH_TYPE_TEB , vsid = vsid , flow_id = flow_id )
generate instance of gre class with information for nvgre .