Glen Turner has a nice blog on th what was going on at AusNOG, well worth a read if you’re a fan of the end-to-end connectivity model.

Back from AusNOG. It’s now clear that allocations of new IPv4 addresses will cease in 2010, so a lot of the conference was about NAT and IPv6. […] So it’s going to be “carrier-class network address translation”. That is, your ISP will run NAT (and if you are the average customer, you will run NAT on your ADSL router too).

This will give the ISP’s far more control than they have now (forget net neutrality) and so if you want to escape from these potential walled gardens you’re going to be needing IPv6 to continue to enjoy what you currently have access to now..