I don't know if this is an issue with mod_perl or libapreq2....
all attempts to get_remote_host error with: Can't locate auto/Apache/Request/get_remote_.al in @INC
libapreq2-2.04-dev Mac OSX 10.3.7 Darwin ModPerl 2.0.RC4 (mod_perl/1.999.21) Apache/2.0.52 Perl/v5.8.1
My friend google seems to say nothing on this -- anyone have a clue?