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Date:      Thu, 24 Aug 2000 20:48:24 -0700 (PDT)
From:      Kurt Wuensche <kwuensche@yahoo.com>
To:        freebsd-security@freebsd.org
Subject:   Route strangeness
Message-ID:  <20000825034824.11470.qmail@web4701.mail.yahoo.com>

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I have recently been having strange occurences
related to FBSD 2.2.5 routing.  I am running static
routing with icmp redirects turned off.  What happens
is that for no apparent reason the default route no
longer works.  The weird part is that netstat -nr and
ifconfig show the default route still USGc and that
the interface
is up.  I can even ping the gateway on my isp, but the
packets go no further.  Thinking it was an isp problem
I called the isp.  Their routing is apparently ok.
Still pings from them sometimes
don't come back.  When this happens my host is also
not visible
from the internet, with a ping to an ip address
returning
request timeout errors.  Even weirder is that a telnet
by ip number
to the machine remotely eventually shows a login
prompt, but only
after waiting for almost two minutes!  I have run
route
monitor and tcpdump and examined messages.  So far
tcpdump has not shown any clues while route monitor
occassionally shows RTM_LOSING messages from pid 0 and
the user ppp process.  messages shows nothing.  Then
for no reason, routing will work again.  A reset also
seems to fix the problem.  I have a friend running
2.2.8 and the same identical things are happening to
him.  Any ideas?

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