Interesting. I guess since IPv6 solves the address allocation problem natively (with SLAAC), it’s not allocation you need to worry about so much as “what IP’s

Interesting. I guess since IPv6 solves the address allocation problem natively (with SLAAC), it’s not allocation you need to worry about so much as “what IP’s does this router see vs that router, recursively”, which it sounds like IS-IS can provide. This would mean each router box in my network would grab its own random (SLAAC) address within the /64 advertised by my “main” router (found via multicast all-routers), and would then each (through IS-IS or something similar) announce and forward individual /128 routes for each host plugged into them. The network would converge such that each individual box would have a complete routing table of what next-hop to use for each IP address in the tree. I can see this being a preferable setup if it allows you to completely eliminate layer 2 from the equation… alas this never happened so it’s all a thought exercise.