What exactly is the story of IPv9? [closed]

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http://serverfault.com – I came across RFC1606 that seems to be discussing some history of IPv9.. Wikipedia IP entry mentioned that it is an April Fool's day joke, but I thought there was some history of that.. I came across some sites that mention that China has adopted IPv9 (not as you'd expect IP to be, actually).. What exactly is the story behind IPv9?? (HowTos)