Bug in routing logic?

From: Christopher W. Curtis (ccurtis@aet-usa.com)
Date: Wed Apr 05 2000 - 11:22:15 EST


Hello,

I'm wondering if I've run across a routing bug or simply my own
misunderstanding:

eclipse:~# uname -a
Linux eclipse 2.2.13 #1 Sat Nov 20 12:44:19 EST 1999 i586 unknown
eclipse:~# route | grep default
default styx.aet-usa.co 0.0.0.0 UG 1 0 0 eth0
default aet-usa.com 0.0.0.0 UG 2 0 0 eth0
eclipse:~# tracepath www.debian.org
 1?: [LOCALHOST] pmtu 1500
 1: 192.168.68.5 922ms !H
     Resume: pmtu 1500
eclipse:~# route del default gw styx
eclipse:~# route | grep default
default aet-usa.com 0.0.0.0 UG 2 0 0 eth0
eclipse:~# tracepath www.debian.org
 1?: [LOCALHOST] pmtu 1500
 1: 192.168.68.254 3ms
 2?: 209.101.87.4
 3?: 206.135.213.73 asymm 37
[...]

'styx' is a computer with problems (or possibly another bug involving
ipmasqadm and an NCR controller on the Alpha, still looking...) Either
way, the machine went down, and Linux would not go to the default router
with a metric of 2. I couldn't find any information regarding this in
the HOWTOs, etc, but did not check the kernel source ...

Thanks for any insight,
Christopher

PS: Please Cc via e-mail, I'm not on the LKML. Thx.

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