On May 28, 2010, at 1:29 AM, Brian E Carpenter wrote: > Today, most users are *not* behind ISP NAT or some other form of global address sharing. An interesting assertion. I'd agree on the ISP NAT part. Not sure about the "other form of global address sharing" part, since single NAT is address sharing. Do you have any data? >> IPv4 free pool runout simply means connecting to the Internet is going to get more expensive. > No, it means it is going to require double NAT unless providers deploy IPv6. I've been told on numerous occasions that multi-layer NAT will significantly increase opex. > That is the message that needs to be got across. I suspect your message will result in a response of "Double whasis? I can still get my pr0n, right?". I'd imagine a message that says "you're going to end up paying more for your pr0n" will get more people's attention. Regards, -drc _______________________________________________ Ietf mailing list Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf