option forwardfor except network issue

Hello all,

I'm trying to deploy haproxy as a replacement for the proxy-module in lighttpd 1.5svn (not yet released), and have managed to mostly configure it to my desires.

I'm having problems getting haproxy to recognise all the RFC1918 networks as exception subnets - what is the correct syntax to exclude all of the 10/8, 172.16/12, 192.168/16 networks from X-Forwarded-For header rewriting for a given frontend? Below is the start of my frontend stanza.

Cheers,

Sigurd

listen http

        bind                    :80
        mode                    http
        option httpclose
        option forwardfor       except 10.0.0.0/8
        option forwardfor      except 172.16.0.0/12
        option forwardfor      except 192.168.0.0/16