@lea@aster like yeah it sounds absurd to think about 2^48 mac addresses ever becoming a problem but if you think about it that definitely makes sense when you loop back to things like virtual network interfaces. How many virtual interfaces through VMWare's hypervisor ESXi alone? Thousands can exist within a single client so it's very much realistic when you get into virtual network interfaces. A single 16 mil allocation could definitely be eaten up by things like virtual network interfaces.