nginx + Varnish and IP logging

Hi all,

I've got varnish in front of nginx and everything is working perfectly.

One problem - all IP's in my access logs are 127.0.0.1

I've configured varnish to pass the client IP via a http header:

sub vcl_recv {
  # Add a unique header containing the client address
  remove req.http.X-Forwarded-For;
  set    req.http.X-Forwarded-For = client.ip;

I see that nginx has a RealIP module but it's not enabled by default (crazy).

The problem I have is that I've installed nginx via apt-get rather than compiling from source.

Do I need to remove nginx and reinstall from source or is there a way to enable real ip from the apt-get packaged version?