DUO for RDS Gateway behind load balancer



We are currently running an HAProxy infront of 2 RDS Gateways, and are using DUO authentication for RDS Gateway.
As expected when we connect through the HAProxy to the RDS Gateways, the client IP address isnt forwarded, and all the clients are listed as connected with the HAProxy IP address.
This is expected.

We want to be able to forward the Client IP address to the RDS Gateway, which ofcourse isnt DUOs “fault”, that its not happening be default.

But wanted to reach out, and hear anyone has some experience with this issue - and what type of load balancer that you´ve used, to be able to run the load balancer transparent.