IP backend reverse proxy problem

[Bertrand Caplet]

Hi, I've installed nginx as a reverse proxy with 2 backends web servers
(one nginx, one apache). I want the backends servers to have the "real"
IP of the client on their logs and on the webpage. I tried
proxy_set_header like here :    
https://help.ubuntu.com/community/Nginx/ReverseProxy and apache with the
rpaf module but it doesn't work...
Hope you'll have some advices. I just want the backends server to
display the client IP not like right now, have a look :
http://wiki.okira.net/w/Accueil it display the reverse proxy IP
(127.0.0.1 or 87.106.165.190).
Regards.
-- 
Bertrand Caplet
Tel. 02 33 35 20 94
Mob. 06 35 43 68 46
Web. blog.okira.net <http://blog.okira.net>
bertrand.caplet at okira.net
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.nginx.org/pipermail/nginx/attachments/20120808/6d264737/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: sig-ecolo.gif
Type: image/gif
Size: 1988 bytes
Desc: not available
URL: <http://mailman.nginx.org/pipermail/nginx/attachments/20120808/6d264737/attachment.gif>