I am playing around with IPv6NAT on 7.1rc1, which is much cooler than I first though. Hopefully this starts no discussion about use or don't use of IPv6NAT!
Now all local clients have fd00::xxx addresses and the router at fd00::1 does IPv6NAT/port forwarding.
Works fine on MacOS, Linux and IOS. I can ping/curl everything via IPv6.
But there is one problem: Now that the clients have no longer a global unique address, IPv6 is no longer favoured over IPv4.
What is the best practice to use IPv6NAT and have clients use IPv6 first?