This public repository is a place holder for the latest version of the code for the Perl 5 program h2n. h2n is a Perl 5 utility program which is discussed in the book DNS and BIND, by Cricket Liu and Paul Albitz, and published by O'Reilly Media, Inc.

After a query of the audience on reddit to see if anyone knew of the license status of h2n, I got a message from Cricket Liu (https://www.reddit.com/r/dns/comments/4lp7v9/cricket_lius_perl_program_h2n/d3rwex6?context=3) which said the program came from HP (with permission) and included a link to ftp://ftp.hpl.hp.com/pub/h2n/h2n.tar.gz. When going to the ftp site I found file ftp://ftp.hpl.hp.com/pub/h2n/h2n-2.61rc8 which does contain licensing info which is quoted here:

Copyright (c) 2010, Andris Kalnozols <andris@hpl.hp.com>

Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.

THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.


Originally written by Paul Albitz and Ken Stone of Hewlett-Packard
h2n-hp,v 1.96 1999/12/02 22:05:56 milli (Michael Milligan), Hewlett-Packard
Extended to v 2.61rc8 2010-08-31 by Andris Kalnozols, HP Labs

That file is now incorporated into this repo.