> In theory you could turn off IPv4 NAT as well but in practice most ISPs will only give you a single address

So, I randomly discovered the other day that my ISP has given me a full /28.

But I have no idea how to actually configure my router to forward those extra IP addresses inside my network. In practice, modern routers just aren't expecting to handle this, there is no easy "turn of NAT" button.

It's possible (at least on my EdgeRouterX), but I have to configure all the routing manually, and there doesn't seem to be much documentation.