On 2014-12-09 20:34, Daniel Roesen wrote: > On Tue, Dec 09, 2014 at 04:59:05PM +0000, Steve Housego wrote: >> This is interesting, I hadn¹t came across ?Happy Eyeballs¹ essentially >> they attempt both connections simultaneously - this is great. > > But proper Happy Eyeballs implementations give IPv6 a positive bias so > to help get traffic moved to IPv6 instead of IPv4. Some (one single?) > selfish implementation uses "whatever is connecting faster" with > associated bad effects for transition and troubleshooting. That's got > called "Hampering Eyeballs".
The 'whatever is faster' is actually pretty deterministic. OSX does it with a magic combo that apparently consists out of latency and throughput... and unless somebody figured it out the exact parameters are unknown. Greets, Jeroen
