Hacker News

points by w3ll_w3ll_w3ll 13 hours ago | 0 comments

There is no need for that, every modern OS prefer IPv6 over IPv4

Depends on the application, a web-browser that implements Happy Eyeballs protocol may prefer IPv4 if the IPv6 latency is higher.

I know little of this. How/why could one be higher latency over the other?

Different paths. If you’ve got a “dual stack” on your computer, give it a try.

tracert -4 google.com

tracert -6 google.com

I do get very different hops and latency.

However for “happy eyeballs” algo to fallback to IPv4, latency needs to be very bad on IPv6.

Happy eyeballs is more to fix totally broke ipv6 than speed differential.

For many years and even how there are networks that advertise they can do ipv6 and hand out real addresses but nothing works.