Host addr. not captured in server log

[dirktrojan]

I'm logging and analyzing visits to my server, but was dissapointed to see that only the first hit to ~/photo.php captures the remote host IP address, whereas subsequent viewing events are recorded as requests from the server's own interface:

165.123.97.145 - GET /gallery/photo.php 200 24113 HTTP/1.1 Mozilla/5.0+(Macintosh;+U;+PPC;+en-US;+rv:1.0.2)
10.0.0.100 - GET /gallery/photos/micro/st-louis_0053.jpg 200 2177 HTTP/1.0 - -

I'm sure this has to do with the internal workings of EE/PHP/IIS and occurs for good reason, but I'd like to understand why, just in case a workaround is possible.

(And, Pekka, let me throw more kudos on your already large pile--phenomenal work!!)

[Pekka]

First the page is called from browser - the caller IP is stored by server. Then the page itself calls page items (instructed by html code) from local server (localhost, 10.0.0.100, 127.0.0.1 etc).