Enterprise Dual Stack without IPv6 Transit

[Jeroen Massar]

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