def METHOD_NAME(cls, gtp_src, gtp_dst, udp_src, udp_dst):
    try:
        xmit_cmd = [
            "ip", "netns", "exec", cls.NS_NAME,
            PY_PATH,
            GTP_SCRIPT,
            gtp_src, gtp_dst,
            udp_src, udp_dst,
            cls.gtp_veth_ns,
        ]
        subprocess.check_call(xmit_cmd)
        logging.debug("del ns %s", xmit_cmd)
    except subprocess.CalledProcessError as e:
        logging.debug("Error while xmit from ns: %s", e)