you could also try using 6to4 or somesuch but this is new to me as well. Interested!

6to4 solves a different problem: it's a way to provide IPv6 internet access to some host with only IPv4 internet access. It's basically a VPN you need to configure on the client.

NAT64 and SIIT (what Jool and af-to are implementing) instead are a way to let (potentially) any IPv4-only client to connect to some IPv6-only machine you control. The client need to be aware its actually talking to an IPv6 machine, because there is a translator (typicall a router between them) that transparently translate the packet so they understand each other.