[2072] in athena10
Linerva can't resolve some unc.edu hosts
daemon@ATHENA.MIT.EDU (Xavid)
Sun Apr 5 11:02:49 2009
Message-Id: <1B446D4F-52E1-4913-A7B1-4BA141E3C050@MIT.EDU>
From: Xavid <Xavid@MIT.EDU>
To: linerva@MIT.EDU
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Date: Sun, 5 Apr 2009 11:02:19 -0400
On linerva today, I was unable to resolve www.physics.unc.edu. Other
machines seem to resolve it fine, so either it's something wacky about
linerva or it got blacklisted somewhere. Zlogs below.
~Xavid
sipb / linerva / xavid 10:18 ('I kinda want to be a religious
zealot so I can
On linerva:
$ ping www.physics.unc.edu
ping: unknown host www.physics.unc.edu
I can resolve it just fine from a VM or locally...
-> sipb / linerva / xavid 10:40 (`The Brazilians are gone, the
vomit's cleaned up
xavid@vinegar-pot:~$ dig www.physics.unc.edu
; <<>> DiG 9.5.1-P1 <<>> www.physics.unc.edu
;; global options: printcmd
;; connection timed out; no servers could be reached
It doesn't seem to affect any other MIT machines I try.
sipb / linerva / broder 10:43 (Evan Broder)
I don't know what's going on. The resolver can talk to the NS
servers
for unc.edu, and if I ask any individual server where
physics.unc.edu
is, they can tell me, but bind can't seem to work it out
sipb / linerva / keithw 10:49 (Keith Winstein)
It's not a BIND problem; Linerva can't ping 152.2.5.15
(ns1.physics.unc.edu) or 152.2.4.8, and a traceroute gets
almost all the way but not to the last hop. Since
lamp.mit.edu (just 6 away from linerva's 18.181 IP address)
can ping both, I'm not sure why that is.
-> sipb / linerva / broder 10:49 (Evan Broder)
This wouldn't be the first time that linerva had gotten black-
holed by
some automated security monitor
sipb / linerva.d / keithw 10:50 (Keith)
(Confirmation would be making sure the problem is
IP-address-specific instead of Linerva-configuration-specifi
c, but I thought trying to have LAMP steal Linerva's IP
address to try to nail that down would not be a good
idea...)
