Comment by knorker

> I should've qualified that as address exhaustion on the Internet

Well I addressed that too, so…

> private networking

To some extent this is a distinction without a difference. Again, as I said…

> we would probably be having this very discussion on an IPv6 enabled site

    $ host news.ycombinator.com
    news.ycombinator.com has address 209.216.230.207
    news.ycombinator.com has IPv6 address 2606:7100:1:67::26

When IPv4 is disrupted for me, I only notice because github.com goes away.

> v6 [is] a second class citizen

It is. Except for endpoints (again) as I mentioned…

> the cost difference between a v4 address

The alternative to buying v4 is not just private addresses, as (again, as I was very specific about) private v4 addresses also have a cost.

v4 is priced according to the demand. Without IPv6 demand would be much higher, as the alternative (with CGNAT and intra org problems) would drive up the demand for more public addresses.

To say that "the cost should be equal" for IPv6 to not be a partial/in progress success misses the entire economics of addresses.

The biggest most complex system in the world shuffles half its traffic on IPv6, and rising, with million of devices without any form of IPv4 address.

So no, I would not say it's a failure.