the biggest concern with ipv6 is it's the end of NAT

so right now all the computers on your network are all on a LAN together, and when they go out to the internet they go throuh your router. the internet sees one connection from all of them, your router's connection, and if you want to run a game server or something you have to set up port forwarding. It's pretty easy to keep your shit isolated.

With IPv6 every device is connected directly to the internet. They still go through your router/modem, but they each have their own publicly accessible address. Rubynet will know if I'm connecting from my laptop or my desktop or my phone connected to wifi. So suddenly it matters if you have the windows firewall enabled, etc. It's going to be a security nightmare for people who don't know what they're doing. It's going to make thins easier for people like flaggercat, though, if you want a new IP address just buy a $10 network card from newegg and slap that fucker in your machine.