While I know that IPocalypse as the news hype is calling it, is a little bit overkill. It makes me wonder what will happen to ISP's such as Bitfolk when the IPv4's do run out?

I know a lot of home users are not up to the IPv6 standard yet (Sky Broadband are terrible) so will giving users a V6 address only mean that people still on v4 can't get to them?