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Vietnam plans to convert all of its networks to IPv6 • The Register
(www.theregister.com)
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this post was submitted on 15 Oct 2024
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Dumb question, but my understanding was that ipv6 is not backwards compatible with ipv4. So all devices within Vietnam will be able to talk to each other, but how will they talk to the outside world?
There are ways to translate IPv6 to IPv4 so users can still access legacy sites.
That's gonna be a big-ass NAT.
Better than a big ass-NAT
The article is ambiguous. It states "use IPv6" which at face value could simply mean support it together with IPv4. On the other hand, it states that they are running out of IPv4 addresses beyond what NAT can solve, so perhaps they may not have a choice in the matter.
If this is the nudge needed to transition, then great.
Ipv4 is not even ipv4 compatible. You use nat to translate one type of ipv4 into another to talk on the internet. Ipv6 is using nat in the same way.
The problem is that ipv4 is not forward compatible ( naturally ). So ipv6 can talk to both, ipv4 only to ipv4.