| Quote |
| Global IPv6 adoption ... is currently around 5% |
Not exactly.
Google is primarily a content provider, and what that graph shows is that the proportion of IPv6 traffic *from Google* is about 5%. Google is a dual-stack (IPv4+IPv6) provider. That implies 5% of end-users (by traffic volume) have IPv6 access, assuming they always prefer IPv6 when it's available.
Now, there are other content providers who are IPv4-only. Obviously, the proportion of IPv6 traffic from them is 0%.
Anecdotally: end-users who turn on IPv6 on their access networks see 30-50% of their traffic going over IPv6. Let's call it 40%. If those users are representative, then 40% of Internet traffic is from dual-stack providers and 60% is from IPv4-only providers.
Based on that, it's reasonable to estimate that the total proportion of IPv6 traffic across all content providers is about 2%.
