I would like my access_log to list the host name that the client is requesting (e.g. when requesting http://www.example.com/test I should see "www.example.com" in the log). The only thing I have found so far is to use %v in the LogFormat directive, but this only gives "the canonical ServerName of the server serving the request" (as described by Apache at http://httpd.apache.org/docs/2.0/mod/mod_log_config.html#formats). This does not help me for requests that use a hostname that is not specified in a ServerName directive.
Is there any way to log the requested hostname?