The State of IPv6-only

Statistics abound on the deployment of IPv6 and where it might be in a couple years (hint: with a Logistic adoption curve, 50% of the world may be using IPv6 mid-2019). So that’s the first half of the transition: dual stack. How are we doing on actually migrating to IPv6? What is the state of IPv6-only? It’s not as crazy a question as it probably […]

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IPv4 Not Declared Historic

What happened at the sunset4 working group discussion at IETF95. You may remember my previous post about declaring IPv4 historic. IPv4 and IPv6 were specified in RFCs published by consensus at the IETF, the Internet Engineering Task Force. Changes required a new internet-draft to be written and discussed, and if it achieves consensus (usually after edits), it is […]

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Declaring IPv4 Historic

I’ve posted a new internet-draft, “IPv4 Declared Historic”. I thought I would describe the document, and why I chose to say what I said. First, the definition of historic: A specification that has been superseded by a more recent specification or is for any other reason considered to be obsolete is assigned to the “Historic” level. […]

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Define “Runout”

This week, ARIN allocated another /12, bringing their inventory to less than half of a /8. Since they allocate based on 3-month need, this is “Last Call” for allocations. My friend @toreanderson pointed out that runout date varies based on the size block you need–something I’ve noted before, but haven’t detailed. So I built a spreadsheet. What if […]

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