One more thing: If the data that you're processing contains duplicate IP addresses, you'll save redundant calls to gethostbyaddr by caching results. 
  $hostcache{$&} ||= gethostbyaddr($&, 'tcp');
  if ( defined $hostcache{$&} ) {
      ...

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In reply to Re: novice falls by dws
in thread novice falls by ddeyoung

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