This is Perl module Net::Nakamap.
INSTALLATION
Install cpanm and then run the following command to install
$ cpanm
https://github.com/kayac/p5-Net-Nakamap/archive/master.zip
DOCUMENTATION
Net::Nakamap documentation is available as in POD. So you can do:
$ perldoc Net::Nakamap
to read the documentation online with your favorite pager.
LICENSE AND COPYRIGHT
Copyright (c) 2013, NAGATA Hiroaki <handlename>. All rights reserved.
This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.