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by jfengel 1952 days ago
Well, maybe. If you're trying to use the IP address to include routing information, maybe it's not enough. It's only 16 groups of 8 bits, or 8 groups of 16.

We wouldn't use them up in the same way we used up IPv4, there really can be 4 billion devices to address. But I could see some important spaces becoming very crowded when you try to cram multiple levels of routing information into that small a space, resulting in exploding complexity of routing tables as you try to garbage collect from sparse areas.