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A comment on India is leading IPv6 migration with 61.67% adoption. Parent comment

Re:India is leading IPv6 migration with 61.67% adoption by 2fastpost on Sunday August 15, 2021 @03:07PM (#28191493)
Like I said, you can only avoid CGNAT costs if you accept the failure modes inherent if/when your IPv6 fails.

Thus in a properly designed network these are not optional costs.

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Re:India is leading IPv6 migration with 61.67% adoption by Dagger2 on Wednesday August 18, 2021 @03:31AM (#28218533)
You do avoid some of the cost, because you can direct a significant amount of your traffic over v6 and not need to CGNAT it.

The failure mode for your v6 failing is the same as it is for v4 failing in a v4-only ISP: stuff breaks. If you want to fix that you need a redundant failover setup, which is the same thing you need in v4 except cheaper because it doesn't need to do CGNAT.

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