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Discussion in 'OS X El Capitan (10.11)' started by hojx, Jul 12, 2015.
Apple enhances IPv6 implementation in OS X El Capitan and iOS 9 DB3 and PB1
They did a lot of more than that, they've also implemented support for ECN and so on in the network stack to reduce bufferbloat. You can find more information in their WWDC session on "Your Apps and the next-gen Networks", really awesome session.
Hopefully, in the next few years, more ISP will turn on markers in their networks, Apple will release firmware updates to enable ECN and so on. This will mean better latency for everyone, which is currently the biggest problem in networking, not the speed.
test-ipv6.com still seems to be occasionally giving me the "browser is preferring IPv4" warning with Safari on DP3. Sounds like it could very well be a DNS thing but I wouldn't think there would be a >25ms variance between receiving the A and AAAA records if the requests were both going to the same place.