How to tell if something is anycasted?

Peter Boothe peter at cs.uoregon.edu
Thu May 18 07:36:33 UTC 2006


> > you can do
> > 	dig @f.root-servers.net hostname.bind chaos txt
> > And the response should include a line like
> > hostname.bind.          0       CH      TXT     "pao1b.f.root-servers.org"

On Wed, 17 May 2006 bmanning at vacation.karoshi.com wrote:

> well Peter, ONE root server operator has that practice.  Others have
> different practices regarding anycast.

DNS roots c, f, i, j, k, and m all do something like that, and last I
checked those were all the anycasted DNS roots.  But more may have become
so since I last checked.  It's true that they don't have to do it, but
it's a common enough convention for all the root DNS operators seem to
have agreed on it, and I've been told that DNS root ops is a highly
contentious subject, so any agreement at all is kind of a nice thing to
note.

Or am I misunderstanding what you are saying?

This is, of course, somewhat off the subject of whether the original
provider in question does that - they may or may not, and the only way to
know is to test and find out.  Or ask them.

	-Peter

--
Peter Boothe
PhD Student                         "Young man, you think you're very
Computer Science                    smart, but it's turtles all the way
University of Oregon                down!"
http://www.cs.uoregon.edu/~peter



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