Best way to send client ip info to windows ADS domain controllers.

I've got several vips with ADS domain controllers underneath them. They aren't using HTTP traffic, so X-Insert-For doesn't work for them. I implemented the below irule, but for some reason it only worked in their dev and qa environment, but not in their prod. What I would like to know if the below irule is good, or if there's a better irule or method to getting them the client ips. They can't turn off snat and use the F5 as their default gateway, so that's out.

when CLIENT_ACCEPTED {
set hsl { HSL::open -proto TCP -pool  }
HSL::send $hsl "Client's ip address is [IP::client_addr]:[TCP::client_port].\n"
}

I've applied this to irule to four ports of 3268, 3269, 636 and 389.