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At IETF-49 Rich Shockey and I had an epiphany about the OSI Reference Model. The idea we had was that the original OSI model had largely been supplanted by a slightly modified de facto stack that included two additional layers for a total of nine. We felt that there was a much easier rationalization of these nine layers that would be of tremendous benefit to the community. Shortly after the meeting, I uploaded a diagram that illustrates the the basic idea pretty succinctly.

For some reason, it hasn't caught on like wildfire, but it should be shared nonetheless.