[90367] in North American Network Operators' Group
Re: How to tell if something is anycasted?
daemon@ATHENA.MIT.EDU (Joe Abley)
Wed May 17 16:33:36 2006
In-Reply-To: <20060517144541.GB11649@vacation.karoshi.com.>
Cc: Peter Boothe <peter@cs.uoregon.edu>,
David Hubbard <dhubbard@dino.hostasaurus.com>, nanog@merit.edu
From: Joe Abley <jabley@ca.afilias.info>
Date: Wed, 17 May 2006 16:33:00 -0400
To: bmanning@vacation.karoshi.com
Errors-To: owner-nanog@merit.edu
On 17-May-2006, at 10:45, bmanning@vacation.karoshi.com wrote:
> well Peter, ONE root server operator has that practice. Others
> have different practices regarding anycast.
Actually, it looks to me like all thirteen root servers answer
"HOSTNAME.BIND CHAOS TXT" queries (J might check for trailing dots,
maybe ;-) and also that F and C share a strikingly similar naming
scheme.
[octopus:~]% for n in a b c d e f g h i j k l m; do
for> echo -n "trying ${n}... "
for> dig @${n}.root-servers.net hostname.bind chaos txt +short
for> done
trying a... "ns6-aroot"
trying b... "b3"
trying c... "ord1a.c.root-servers.org"
trying d... "d-root.net.umd.edu"
trying e... "e4.arc.nasa.gov"
trying f... "yyz1b.f.root-servers.org"
trying g... "g.root-servers.net"
trying h... "H1"
trying i... "s1.was"
trying j... "jns1-kr.j.root-servers.net.j.root-servers.net"
trying k... "k2.nap"
trying l... "l1.l.root-servers.org"
trying m... "M-SFO-1"
[octopus:~]%
Joe
