Question abbout CGN: Generally speaking for CGN setups, how many end users are NATed to a single public IP address ?
In terms of traceability, there is a huge difference between loading 200k end users onto 1 public IP and putting say 5 end users per public IP. In the later case, it becomes possible to assign a good range of ports to each of the 5 users on that IP address. In the former case, it isn't. An ISP who nats 5 customers to each public IP address reduces fivefold the need for pulic IP addresses, which is still a major accomplishement.
