Re: "Nobody uses it..."
"I use it!
My home network, my ISP connection and the server where all my web sites live (and the sites I host for others) are all dual stack. It wasn't THAT hard."
I'm almost the same. My home and server both are dual stack. My home network tries to be, but I think there's a bug in my old router that stops IPv6 working fully. Can't be arsed to fix that just yet, but it's on my TODO.