The large address space and thus the king addresses are an artifact of optimizing the routing. I think just saving the endless discussions of "my Xbox only got

The large address space and thus the king addresses are an artifact of optimizing the routing. I think just saving the endless discussions of "my Xbox only got nat type 2, how do I change it?" alone saves more lifetimes than are lost by c&p adresses (not to speak of the large infrastructure costs of maintaining gcnat at scale).