def METHOD_NAME():
    print("USAGE: %s [-i <if_name>][-k <kafka_server_name:kafka_port>]" % argv[0])
    print("")
    print("optional arguments:")
    print("   -h                       print this help")
    print("   -i if_name               select interface if_name. Default is eth0")
    print("   -k kafka_server_name     select kafka server name. Default is save to file")
    print("                            If -k option is not specified data will be saved to file.")
    print("")
    print("examples:")
    print("    data-plane-tracing                                      # bind socket to eth0")
    print("    data-plane-tracing -i eno2 -k vc.manage.overcloud:9092  # bind socket to eno2 and send data to kafka server in iovisor-topic.")
    exit()