[Xymon] Use X-Forwarded-For header for client IP?

I have all my websites behind a reverse proxy.? For those who might be interested, it's haproxy.? I'm using it because it handles all the TLS and can be easily configured to handle DDOS attacks.

Is it difficult to get xymon to use the X-Forwarded-For header?? Did some googline and came up empty.? I have some disabled tests, and this is what it says:

Disabled?by:?elyograg?@?127.0.0.1

I would like to see the real IP address there.? I've got Xymon 4.3.28 installed from source.

Thanks, Shawn