On 2017-12-19 12:18 PM, UpTide . wrote:
If we allocate a /64 like we do single ipv4 addresses now the space gets 2^56
(16777216) times larger; but if we start doing something crazy like allocating
a /48 or /56 that number plummets. (256 times larger, and 65536 times larger
respectfully.)
But then again I'm bad with math, maybe not?
You most certainly are. There are (2^32)*(2^32) in 2^64, meaning
everyone who has a /32 of IPv4 would get about 4 billion /64s if we
chopped it all up the same way. Or 65536 /48s, or 16777216 /56s.
I think the argument is not that there isn't enough address space to go
around; more that profligate allocations to begin with may restrict
future options on a century-scale timeline.
