Not getting the real ip address of client

Hi I’m having problem on piwik… I can’t get the real ip address of client… my setup is like this

[FW–>LOAD BALANCER --> Apache ] public DMZ
—>[PIWIK HOST] private DMZ

when I try to check the logs I see load balancer ip not the forward ip of client. other info piwik log it browser, os… etc…

my config.ini.php :

proxy_client_headers[] = "HTTP_X_FORWARDED_FOR"
proxy_host_headers[] = “HTTP_X_FORWARDED_HOST”

Please help,

I have open a topic too, it’s seems to be the same pb