Timely (HOST) resolution is not a problem on my servers. In fact I wrote (finally finished) a little resolver in about 160 lines ( C source ). That'll turn a file of 255 IP addresses into HOTS name(s), in under ~1 second, on standard CPE. Even faster if given a fatter "pipe". It does so accurately. It is slower, of course, on slower connections, or on bad / unmanaged addresses. Tho I could add a time threshold to the resolver. I haven't bothered, as I only use it for post-processing.

So, it would seem from your response; that you'd recommend using a pipe. If my intent is to process the (connecting) IP addresses in real-time. While I had hoped to avoid that. I guess I'm not terribly surprised.

Speaking of the Apache HTTPd; it's interesting that Apache doesn't have, or choose the use of a pipe. As it happily logs resolved IP addresses to it's log(s), from all my experiences with it.

Maybe I'd do well to give it's source a look over. For possible clues.

Thanks again, afoken, for taking the time to reply!