It's workable if all of the machines you're going to talk to have v6, which is doable. Or you can run your own NAT64. It would also be very easy to suggest tha

It's workable if all of the machines you're going to talk to have v6, which is doable. Or you can run your own NAT64. It would also be very easy to suggest that maybe Hetzner want to encourage people to keep paying for v4.