Reply to post: Re: why did IPv6 use 128bit Hex?

We are absolutely, definitively, completely and utterly out of IPv4 addresses, warns RIPE

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Re: why did IPv6 use 128bit Hex?

Well, in the original implementation the interface ID contains the MAC address. Now this is regarded not nice because it does leak a (mostly) unique identifier of the device which can be tracked across different networks. Probably that was not thought a big issue in 1996 when even usable laptops were a kind of novelty.

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