History of 4.2.2.2. What's the story?

Scott Howard scott at doc.net.au
Sun Feb 14 16:00:27 CST 2010


On Sun, Feb 14, 2010 at 1:19 PM, Sean Reifschneider <jafo at tummy.com> wrote:
>> Why "conjecture"?  Examining the /32s from inside and outside of 3356
>
> I said conjecture because every person I found in my searches said things
> like "I think it might be anycasted" or "they could be using anycast".
> Until this thread, I didn't see any that spoke with authority on the
> subject.

http://www.traceroute.org (and/or http://lg.level3.net, etc) will show
pretty readily confirm that it's anycast.

They will also show that in some parts of the world the various
4.2.2.1-6 addresses go to different locations.  eg, from Level 3 in
London I'm seeing 4.2.2.1, .3 and .5 going to London, but .2, .4 and
.6 all go to Frankfurt.

Personally I've moved away from using 4.2.2.1 and .2 after we had a
few issues with them, especially in Europe.  4.2.2.5 and .6 seem to be
far more stable, although obviously that might vary depending on
region.

  Scott.




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