[ipv6-wg] Happy Eyeballs bias

Hi,

> Op 26 okt. 2016, om 17:04 heeft Mikael Abrahamsson <swmike at swm.pp.se> het volgende geschreven:
> 
> On Wed, 26 Oct 2016, Sander Steffann wrote:
> 
>> HE head start = 300 + (months after 2017-01-01) * 30
> 
> I don't believe in this. Trying to deploy something by severely degrading the customer experience in the fail case is worse than just failing it completely.

Fair enough

> It would be better to keep it at 300 ms (still significant penalty), but instead recommend the OS vendor to install some kind of heuristic to flag for the user somehow that their IPv6 connectivity is degraded, and offer to fault find it... or let's invent some kind of telemetry where these kinds of breakages can be reported to the OS vendor so they can contact the ISP and alert them to the breakage?

I would be very interested in telemetry, but also to the website owner. I see too many unspecified, localhost, 6to4 and ipv4-mapped addresses in DNS without the website owner every even noticing their setup is broken. Which is why I suggested a more gradual approach than letting it fail hard, but maybe that is what we need at some point.

> Also, we still have the problem with PMTU blackhole detection and mitigation. Why isn't this turned on more?

Another good question

Cheers,
Sander

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