By default, a relay daemon listens on all network interfaces to receive
trace data, but only on `localhost` for LTTng live connections. Override
the listening URLs with the option:--control-port, option:--data-port,
By default, a relay daemon listens on all network interfaces to receive
trace data, but only on `localhost` for LTTng live connections. Override
the listening URLs with the option:--control-port, option:--data-port,