The world supply of IPv4 addresses is nearing depletion. We were trying different approaches during the last couple of European hacker events. This year we like to use a combination of ratools (video) and an A10 Networks box. To get used to the future and gain some experience with how it may soon feel, ports 1-4 on each switch function as "NAT64/DNS64" ports. Your operating system will need to support native IPv6.
You can also configure this IPv6 addresses as nameservers:
For a complete explanation of NAT64/DNS64 please consult the NAT64 Wikipedia page.
NAT64 over WiFi
Just connect to SSIDs camp or camp-legacy using username nat64 and password nat64 and you will be dropped into the NAT64 network. Using this credentials does not affect your encryption, you'll be as safe as you can be on a hacker camp :)