Apache mod_rpaf configuration used in combination with Varnish. When using Varnish the $SERVER variable remote_addr is set to the Varnish server IP instead of the client ip (site visitor). If Varnish is configured to send X-Forwarded-For headers containing the client IP, then mod_rpaf can use that information and set remote_addr to the client IP. This configuration is for mod_rpaf only, and is to be used in /etc/apache2/mods-enabled/ or equivalent.