Add comment for broadcast_ip option
@@ -18,4 +18,5 @@ agent.region=${controllerRegion}
# please uncomment the following option if you want to run controller_to_agent connection mode agent.
#agent.connection_mode=controller_to_agent
#agent.connection_port=14000
-#agent.broadcast_ip=127.0.0.1
+# set following with the ip you want to broadcast yourself. Set this option if the agent needs to be discovered as public ip.
+#agent.broadcast_ip=
