Jun 18 08:12 2016, Tony Langdon wrote to Allen Prunty:
AP>> I previously worked for a major provider and they are saying that the AP>> IPv4 will be around for a longer time than some anticipate. As the AP>> major corporations are adopting IPv6 they are releasing thousands of AP>> IPv4's back into the ecosystem and the crisis of running out of AP>> IPv4's has been relieved.
TL> Yes, I can see how that may happen, but it does mean IPv4 will become TL> more of a wasteland of NAT and similar technologies, since those TL> migrated sites will have to be translated to IPv4 to be able to access TL> that protocol. The effect of that will bear some resemblance to NAT, TL> depending on what techniques are used.
Another network professional here. I doubt that any major corporation will return or sell public IPv4 address space. Several got a /8 long time ago and only use it internally, maybe a few addresses for public services. Since those major corporations didn't manage to migrate to private IPv4 address space the last 20 years, they won't be able to migrate compeletely to IPv6 the next 20 years. And the shortage of IPv4 address space has already started.
