What is the simplest strategy for finding the sender of the get request from apache? I keep seeing error logs that imply some page/application is delivering a get request a favicon file, that is nonexistent. I grep'd my entire webhost directory although not just one file in there's referencing this nonexistent favicon file.

It is possible to method to discover precisely what or who's delivering the get request this file?

Apache 2 on CentOs.

Nevermind, most contemporary browsers request favicon files regardless.