Tell HN: IPv6-only still pretty much unusable 4 years ago
Totally viable.. Been IPv6-only since Fall 2014 https://www.internetsociety.org/blog/2014/06/facebook-moving...
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Unique IPv6 prefix per host [pdf] 8 years ago
One of the benefits of /64 per host is there is no NDP since the only neighbor is your router.
Apple and IPv6 – Happy Eyeballs 11 years ago
This is actually a huge change for Apple as iOS and OS X would only use IPv6 ~20% of the time because of the IPv4 bias the old algorithm used. After this change, I expect to see IPv6 at the level's we see at facebook with our app to approach 80%, which is a huge improvement and hopefully results in a good rise in IPv6 usage on the internet.
This is not true. Facebook has never attempted to migrate them to Linux. If WhatsApp wants to convert to Linux, it is their decision. More than likely they will stay on FreeBSD as that is what they know how to run and a good way to kill a product is to force them to do things instead of focusing on building their product.