ByeBye v4

You can get the same information at http://ipv6.he.net/statistics/ , online and in other forms, including extremely accessible Dashboard widget for OS X. Check out http://www.tunnelbroker.net/ for their tunnels. The source data is the well-respected countdown from Jeff Huston at http://www.potaroo.net/ , the IANA v4 allocation registry, etc. There is a long list of links in the app itself. There is also a wealth of information out there on the Internet, and just as much in the press, about IPv6 itself in general, including the Hurricane Electric IPv6 site at http://ipv6.he.net/ . Certainly, if you want this app, you probably have or want some idea of what it's for, and are quite passionate about the protocol. As of just now, we're about a day from the great regional handout, so find yourself a tin hat quick! :-)