IPv4 Space is Getting Low - Really Low

1.0.0.0/8 is Allocated by IANA

Something happened this month that probably didn't get much attention, but I always felt would be an unofficial sign that IPv4 space was getting terribly low. IANA, the organization that coordinates global IP addressing, allocated the previously unallocated, and distinctive, 1.0.0.0/8 block to APNIC. APNIC can now allocate 1.x.x.x blocks to ISPs and organizations. Not saying it will happen soon, but Internet sites could start popping up with a 1.1.1.x address. I always felt this would be a major psychological moment for IPv4 address space exhaustion. 1.0.0.0/8 was a conspicuous class-A block that had never been used in the public Internet. It just always sat there at the top of the list, "UNALLOCATED". It was special. It was the first possible IP address space and no one had it. (Well, except for all the people and organizations that have used 1.x.x.x addresses internally for years for testing, lab, and management. How many of us have configured a 1.1.1.1 loopback address on a router?) This came just before last week's announcement that available IPv4 addresses have fallen under 10%. Things are getting tight out there. Something is going to have to pop up in the next year and it won't be IPv6. IPv6 may be the long-term plan, but there needs to be a bridge to get us there. That bridge is rapidly approaching; too bad no one knows what the bridge looks like. We are working on IPv6 plans, but it's nascent at this point. Things are going to get interesting in the two years. We need some bright graduate students at Stanford to find a solution. They can be billionaires and we get our bridge. Remind me to buy their stock at $20 a share.

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