I just found out that Google publishes IPv6 traffic numbers for Google users, going back through 2008. It shows what you expect, traffic as a percentage has steadily increased, it’s consistent but not exponential. Right now Google averages about 14% IPv6 since January. But there’s a weird phenomenon that I can’t explain.
Because Google tracks this daily, the graph is pretty fine-grained. Since about 2012, the numbers show relatively big drop offs in IPv6 traffic as an overall percentage throughout the week. Oddly, this drop off exclusively occurs on the weekends. With a few exceptions (for example the US election), traffic during the week is about 2-3% overall percentage point lower, about 25% of overall IPv6 traffic.
Maybe this has a lot to do with a lot of legacy business networking still using IPv4? Then over the weekend, with less traffic through these legacy systems, it ticks up? I think I would need to see this compared to overall traffic volume before I can say for use. Either way, it’s a little weird.
Thanks to Matthew Green for sharing this.
— Matthew Green (@matthew_d_green) March 1, 2017
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