Re: Dual stack IPv6 for IPv4 depletion

On Wed, 08 Jul 2015 22:32:35 -0400, Mel Beckman <mel@beckman.org> wrote:

You have to draw the limbs somewhere. Why not 512 bits? 1024? The IETF engineers that thought about this long and hard and discussed the topic we've just had, and a thousands of other topics, decided on 128. I'm inclined to give them the benefit of the doubt. :)

Actually, it was *64*, but SLAAC's use of MAC would've left only 16 bits. Adding it on meant a 112bit network. Round up and we get 128!