I had to comment on Douglas Schweitzer's blog entry today about the coming of IPv6. Apparently we're running out of addresses. When I was a consultant for ISPs some 15 years ago, we were told then that the IPv4 address space was running out and we'd need to move to IPv6 'soon' to resolve the issues of the rapidly disappearing finite address space offered by IPV4. To be fair, we've addressed some of the issues that would have exhausted the space. We removed the need for the class-based addressing, and most companies of varying sizes hide their hundreds or thousands of machines behind a single public IP address using NAT and firewalls.