Rate limiting with a load balancer

When rate limiting is performed by the reverse proxy, and when there is a load balancer or other network device terminating traffic and then forwarding onto the reverse proxy, the IP address flag ip: true is not useful. The IP address is effectively static (as it is the address of the network terminating device). In order to rate limit on an IP address in this situation, have the network terminating device include the client IP address as a header, and include this in the rate limiting configuration.