MIT License

Copyright (c) 2021-2026 Nic Boet

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

---

This project's initial control-flow concept (read CIDR/IP lines from STDIN,
aggregate via Net::CIDR::Lite, print the result) was inspired by a script
published by Adrian Popa at:
http://adrianpopagh.blogspot.com/2008/03/route-summarization-script.html

That original work carries no explicit license or copyright notice, but
copyright in it is, by default, held by its author, Adrian Popa, regardless
of the absence of a notice. No rights to that original work are granted,
implied, sublicensed, or claimed by this repository or the license above
beyond the attribution here. All validation logic, IPv4/IPv6 handling, SPF
support, CLI options, and other functionality in this repository were
written independently by the copyright holder named at the top of this
file.
