Yesterday's Windows update causes IPv4 to be default

Nick Hilliard nick at foobar.org
Thu Nov 15 13:26:18 CET 2012


On 15/11/2012 12:08, Lorenzo Colitti wrote:
> 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.

The connection load problem is not good, no.  I don't know how this is
going to affect operators in the real world, but I could see that the
Googles of the world would be none too happy about it.

> 4. It's non-deterministic, which some websites don't like as they tie your
> cookies to your IP address.

This is a problem which already happens with privacy addresses.  I'm
constantly getting hit by it.  HE will exacerbate it.

Nick



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