Yesterday's Windows update causes IPv4 to be default

[Lorenzo Colitti]

On Wed, Nov 21, 2012 at 9:56 AM, Doug Barton <dougb at dougbarton.us> wrote:

> I'm curious about why MS chose not to simply implement the Happy Eyeballs
> protocol?
>

HE has drawbacks, such as additional server connection load, tendency to
prefer IPv4 more than necessary (just look at Apple's implementation, which
prefers IPv4 most of the time), and tendency to mask IPv6 connectivity
problems.

MS's implementation fixes the "pathologically broken IPv6" case, which is
the one that really needs to be fixed, while preferring IPv6 all the time
everywhere else. I think that's a good tradeoff.
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