David, I've noticed that your CPAN module, Net::Netmask has ADOPTME as a comaintainer. I also note that there are some long-standing bugs that would be good to address. It's a module I use, although my main concern (that's starting to become more of an issue) is the lack of IPv6 support.
Are you still maintaining this module, or might you be interested in finding someone else to work on it? If you're interested in finding someone else, I'd love to take over maintenance of the module (my CPAN ID is JMASLAK). My background - I've programmed Perl for nearly 25 years, and have been involved with internet networking for a bit longer than that. I have a lot of experience with internet development - I've written DNS, BGP, and LDP daemons in Perl (sadly much of that code can't be released publicly), and have built extensive IPv4 and IPv6 networks - so I believe I'm reasonably qualified to work with this module. My plans would be to keep the interface compatible with existing code, but add IPv6 support and fix the long double issues. If you're still interested in continuing to maintain this, you might want to remove the ADOPTME permission in PAUSE, and I'd love to talk to you about some ideas I have for how to support IPv6 and get your feedback on what might be helpful to you. I'd also like to see it support -ld builds of Perl. If you're not interested in maintaining it, again, I'd be happy to become a maintainer. If none of this would be helpful to you, I apologize and am glad to defer to your decisions on this module!