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>This is another "if you ask an economist" situation. In the real world, people will happily spend more effort justifying not doing v6 and working around problems caused by being v4-only than would be needed to just do v6.

Yea, I don't like silly economism too, and I know half the jokes too. However, right now IPv4 addresses aren't so expensive. Sure, way more expensive than the 0 bucks they should cost, but not that expensive in the grand scheme of things.

Here's a very rough calculation: The cost of IPv4 will start to bite when getting the needed addresses costs more than a single engineer salary where one lives. If a one time address buy costs less, it's not something business would care much for, and anti-trust won't touch it.

I'm not smart enough to be able to forecast pricing, right now it's not there yet. Eventually the price will force every public network to IPv6, while many private networks will remain IPv4 forever.




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