On the other hand it is only 2^48 addresses per planet in just this
universe.
I have long since given us being surprised that practical infinities are
frequently too small.
- Stewart
On 28/09/2017 15:33, JORDI PALET MARTINEZ wrote:
Maybe, who knows, bute ven using it for many more things than just videos, I
always recall Tony Hain calculation:
“if you project 32 B (2^35) people over the lifetime of IPv6, and allocate all
of them 4 /48's at 50% routing efficiency, you get 2^10 versions of that. If
each of them took a year to build out, you are still well over 500 years”
Somebody suggested me also to send this link:
https://xkcd.com/865/
Regards,
Jordi
-----Mensaje original-----
De: Stewart Bryant <[email protected]>
Responder a: <[email protected]>
Fecha: jueves, 28 de septiembre de 2017, 16:29
Para: <[email protected]>, <[email protected]>
Asunto: Re: [Int-area] IPv-not-10.
On 28/09/2017 14:23, JORDI PALET MARTINEZ wrote:
> I don’t think even in those 500 years, we will run out of IPv6 addresses,
I hope you are right, but:
I am sure that the original IPv4 designers thought that 2^32 was likely
to be an infinity of IP addresses, but then the Internet was hugely
successful, and now they are all allocated.
I am also sure that the IEEE though that thought that 2^48 was likely to
be an infinity of MAC addresses, but then VMs were invented, and now
they are worried.
People are proposing to use IP addresses for all sorts of things other
than host addresses. For example, video fragments was one idea presented
at the last IETF, but once that flood gate is opened, who knows what
people will be wanting to address with IPv6 addresses, and how many they
will need.
So whilst 2^128 seems a pretty safe bet, history is not with us.
- Stewart
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