On Dec 19, 2017, at 18:22 , Valdis.Kletnieks@vt.edu wrote:
On Tue, 19 Dec 2017 20:18:57 +0000, "UpTide ." said:
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.)
You seem to have missed an entire octet's worth of bits, so off by a factor of 256…
That’s OK… You seem to have your directions reversed...
A /48 is 16 more bits than a /32, so 65536 times bigger.
You mean smaller.
A /56 is 24 more bits than a /32, so 16777216 times bigger.
You mean smaller.
And a /64 is 32 bits more than a /32... so....
Given that a /33 is just about enough to give everybody in the planet one, giving away 8 million times that many is going to be a challenge, unless somebody invents nanotech that wants a separate address for each nanomachine.
Not outside the realm of possibility, but they’d need to invent nonotech that resulted in 8+million * 18 quintillion machines per person to really cause a problem.
But I'd argue that if I have personal nanotech, I *really* want to use ULA addresses. They're *my* nanotech. :)
Feel free. Personally, I still see ULA as an absurdity. Owen