Reply to post: Re: "What's wrong with a /64 prefix?"

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

Nanashi

Re: "What's wrong with a /64 prefix?"

SLAAC on two networks, e.g. main plus guest or IoT networks. You don't need any more justification than that.

/56 isn't a big allocation. In terms of fraction of the total available space, it's 1/256th of a single TCP port of a single v4 IP. Nobody should need to deal with an allocation size smaller than that, and the question of whether a /64 is sufficient or not should never need to be asked by anybody.

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