On Nov 22, 2013, at 2:29 PM, Phillip Hallam-Baker <hallam@xxxxxxxxx> wrote: > They will scale fine just like the dialup pools have scaled fine. Dialup pools are stateless. CGNs are stateful. They do not scale the same way. This is not to say that you _can't_ scale CGNs—it's just easier to scale stateless-core NATs. I say this based on zero operational experience, of course... :)