[justincormack]

I am not sure you need to. If each machine has a /64, then each can assign that on the docker0 bridge and run radvd which assigns addresses to the docker containers (from the /64 or eg a /80). I dont see radvd needs changes; you should be able to even run it on its own docker container.

I think the issues are more around the fact you may need to change existing addresses, plus potentially split up the /64 (or whatever) your machine has among docker bridges, plus you need to make sure the /64 is no longer on the external interface.