using mysql-proxy for WAN loopback

[Lynn Fogwell]

I want to test the WAN performance of the MySQL server on my LAN. From my LAN, if I connect using my public IP address, my router sees I'm local and does a short-circuit loopback.

I have installed mysql-proxy (0.8.1) on an Amazon EC2 instance. All I want is to throw everything back to my single MySQL server. I want to see the latency. All the documentation says that this is simple:

mysql-proxy --proxy-backend-addresses=mydomain.org:3306

When I run this, I get:
(critical) admin-plugin.c:569: --admin-username needs to be set
(critical) mainloop.c:267: applying config of plugin admin failed
(critical) mysql-proxy-cli.c:596: Failure from chassis_mainloop. Shutting down.

I assume things are different in 0.8.1. How do I get this simple case to run? Or am I missing a simpler way to do this...

Thanks - Lynn