ip2host - Resolves IPs to hostnames in web server logs

       Maurice Aubrey <maurice.aubrey+ip2host@gmail.com>

       Based on the logresolve.pl script by Rob Hartill.

       Copyright 1999-2012, Maurice Aubrey <maurice.aubrey+ip2host@gmail.com>.

       This module is free software; you may redistribute it and/or modify it under the same terms as Perl
       itself.

       This is a faster, drop-in replacement for the logresolve utility distributed with the Apache web server.

       It's been reported to work under Linux, FreeBSD, Solaris, Tru64, and IRIX.

         ip2host - Resolves IPs to hostnames in web server logs

       Resolves IPs to hostnames in web server logs.  This is a faster, drop-in replacement for the logresolve
       utility distributed with the Apache web server.

       Web

perl v5.32.0                                       2021-01-02                                         IP2HOST(1)

         ip2host [OPTIONS] [cache_file] < infile > outfile

         infile  - Web server log file.

         outfile - Same as input file, but with IPs resolved to hostnames.

         Options:

         --children=...  Number of child processes to spawn (default: 40)
         --timeout=...   Seconds to wait on DNS response (default: 20)
         --buffer=...    Maximum number of log lines to keep in
                         memory (default: 50000)
         --flush=...     Number of lines to process before flushing
                         output buffer (default: 500)
         --cache=...     Filename to use as disk cache (default: none)
         --ttl=...       Number of seconds before IPs cached on disk are expired
                         (default: 604800 - One week)
         --ipv6          Match IPv6 addresses too
         --regex=...     Perl regular expression to match IP