Version 2.9 =========== - Rewritten to use a faster state machine recognizer and mapped files, about 3 times faster overall, no speed penalty for matching through the whole line - Handles both IPv4 and IPv6 patterns - Better error checking - Handle multiple input files Version 1.3 =========== - Much faster than past versions due to binary search of patterns - Decreased memory usage - Applied search improvements suggested by Dick Wesseling - Now supports IP ranges as well as CIDR format - Improved usage to be more grep-like (e.g. filename on command line) - Now uses grep-like exit code (0=ok, 1=no match, 2=error) Version 1.2 =========== - Improved algorithm for faster processing with large number of patterns (approx. 50 times as fast on test set, with specs from diverse regions) version 1.1 =========== - New algorithm has increased speed by about 2.4 times! - Added -c (count) option, like grep - Reduced memory usage in case loading large files (-f) - Added simple Makefile version 1.0 =========== - First public release