Dual stack IPv6 for IPv4 depletion

Tue Jul 14 04:22:03 UTC 2015

How so?

There are 8192 /16s in the current /3.

ISPs with that many pops at 5,000,000 end-sites per POP, even assuming 32 end-sites per person
can’t really be all that many…

25 POPS at 5,000,000 end-sites each is 125,000,000 end-sites per ISP.

7,000,000,000 * 32 = 224,000,000,000 / 125,000,000 = 1,792 total /16s consumed.

Really, if we burn through all 8,192 of them in less than 50 years and I’m still alive
when we do, I’ll help you promote more restrictive policy to be enacted while we
burn through the second /3. That’ll still leave us 75% of the address space to work
with on that new policy.

If you want to look at places where IPv6 is really getting wasted, let’s talk about
an entire /9 reserved without an RFC to make it usable or it’s partner /9 with an
RFC to make it mostly useless, but popular among those few remaining NAT
fanboys. Together that constitutes 1/256th of the address space cast off to
waste.

Yeah, I’m not too worried about the ISPs that can legitimately justify a /16.

Owen

> On Jul 13, 2015, at 16:16 , Joe Maimon <jmaimon at ttec.com> wrote:
> 
> 
> 
> Owen DeLong wrote:
>> JimBob’s ISP can apply to ARIN for a /16
> 
> Like I said, very possibly not a good thing for the address space.