There is an ongoing outage on the primary CPAN mirror. It is possible to work around the issue by using MetaCPAN as a mirror.

Revision history for Net-CIDR-Overlap

0.2.0	 2919-11-11/01:00
		 - Add remove support.
		 - Now properly handles mixed IPv4 and IPv6.

0.0.1	 2019-10-07/05:50
		 - Initial release.