@stefan @picofarad Fair, but why netcup? How did you find out about them? Why didn't you end up on another host like Arubacloud? Were they just the absolute cheapest non-Hetzner option?
Also why do so many of these hosting providers do so much IPv6 voodoo that only works if you bend the linux kernel too far. I hate it, finding a KVM host where you can actually install OpenBSD and use IPv6 is surprisingly difficult.