Passing through client IP address to server

[ADOFMS Admin, SteveOC]

Im running both Varnish and my LAMP application on the same machine, so
all requests hitting the apache server now have an incoming IP address
of 127.0.0.1.

Is there something that I can do in VCL to set the client IP address
that apache sees as being the real client IP address ? 

My PHP app has a requirement to record both client IP address,
timestamp, and browser version for all accesses to the system, so I
eventually need to make this happen.

Thnks
SteveOC


Apologies if this topic has been covered before - Ive done a good search
using google, and couldnt find an answer to this one .. thanks.