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    Weird that China is not highlighted on that map; makes me not trust the data.

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      China is shown in fig. 5 as having < 5% deployment.

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        That seems unlikely, given that they were one of the primary advocates of ipv6 though.

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          China had large blocks of IPv6 allocated early on but they only recently started using it. Part of my job involves maintaining a CDN inside China. In mid-2018 our Chinese partner were told by a government ministry “IPv6: do it, do it now” and everyone had to jump and implement it in sites that had never had it before.

          APNIC published a blog post earlier this year which backs that up, as well as the 5% number: https://blog.apnic.net/2019/01/03/ipv6-in-china/

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            Oh, wow! Thanks!