On Jun 6, 9:51 ¨Âí¬ ÂòéáÃáîäìå¼â®ãáîä®®®Àðïâïø®ãïí÷òïôåº > BTW, a little while ago I released a small library,http://github.com/deploy2/ruby-ip > and it seems we've had some similar ideas (such as separate subclasses > for v4 and v6). I meant to add things like IP#each but never got around > to it :-) Hi Brian I wasn't aware of your library when I started writing mine. I'm not a fan of duplicating efforts, pity we didn't see each other :) Very nice job BTW Regards, Marco