Just curious, how do you handle non-HTTP(S) traffic to applications? You said applications get dedicated IP addresses (I assume v4 and v6). Not having the ability to multiplex an IPv4 address (e.g. if I deploy an application that accepts connections on port 1337/TCP) will get expensive quite quickly, so I wonder how you solve this problem! :)
Do you mean it would get expensive to run multiple applications that listen on a single TCP port?
It _might_, if you need a bunch of ipv4 addresses it'll add up fast. But you could always put your own router app in place to accept that port on one IP, find the right ipv6, and forward connections along.
