Access_log of Apache http server can't show real IP address but just LAN IP address

apache

#1

Access_log of Apache http server can’t show real IP address but just LAN IP address.
I checked the configuration files about Apache but I can’t find anything about reverse proxy.
What should I do to see the real ip, any ideas? Thanks in advance.

ps.
I tried to edit the file /etc/apache2/apache2.conf:
LogFormat “%v:%p %h %l %u %t “%r” %>s %O “%{Referer}i” “%{User-Agent}i”” vhost_combined
%h —> %{X-Real-IP}i
But it did’nt work after restarting Apache.
Is it a limit of policy?