Yesterday's Windows update causes IPv4 to be default

[Lorenzo Colitti]

On Wed, Nov 14, 2012 at 4:42 PM, Nick Hilliard <nick at foobar.org> wrote:

> I respect Apple's position on HE much more - at least they did their
> homework and made a smart technical decision instead of implementing a very
> naive algorithm with clear drawbacks like this.
>

The Apple algorithm has drawbacks too. To wit:

1. It biases in favour of IPv4 by trying the A record first.
2. By always preferring the fastest protocol, even on a perfect dual-stack
network it will use IPv6 only ~50% of the time (unless IPv4 is degraded).
3. It imposes twice the connection load on server operators.
4. It's non-deterministic, which some websites don't like as they tie your
cookies to your IP address.
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