[sslh] Apache and the right IP address?

[Brom]

Hi,
Some weeks ago I set sslh up to have https and OpenVPN both on port 443.
Now I realise that Piwik detects always 127.0.0.1 as the visitor's IP
and so can't display the location of the visitors.
is it possible that Apache (or Piwik at least) can see the true IP
addresses of the visitors?

Regards from Germany,
Brom