From owner-freebsd-bugs  Wed Jun  6  4:20: 8 2001
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Date: Wed, 6 Jun 2001 04:20:05 -0700 (PDT)
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From: Andre Albsmeier <andre.albsmeier@mchp.siemens.de>
Subject: Re: kern/27890: FreeBSD not always seems to take the best route
Reply-To: Andre Albsmeier <andre.albsmeier@mchp.siemens.de>
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The following reply was made to PR kern/27890; it has been noted by GNATS.

From: Andre Albsmeier <andre.albsmeier@mchp.siemens.de>
To: David Malone <dwmalone@maths.tcd.ie>
Cc: Andre Albsmeier <andre.albsmeier@mchp.siemens.de>,
	FreeBSD-gnats-submit@freebsd.org
Subject: Re: kern/27890: FreeBSD not always seems to take the best route
Date: Wed, 6 Jun 2001 13:19:26 +0200

 On Tue, 05-Jun-2001 at 20:05:57 +0100, David Malone wrote:
 > On Tue, Jun 05, 2001 at 06:30:14PM +0200, Andre Albsmeier wrote:
 > > The problem is that each time when syslogd on C wants to send
 > > a packet to S, the kernel still uses 1 as router even though
 > > it should send them through 2.  After HUPing or restarting
 > > syslogd on C (which means that the UDP socket is closed and
 > > opened again) things are back to normal.
 > 
 > This sounds like it is to do with the caching of recently used
 > routes. Does the effect go away if you leave it for a while?
 
 I had it running for 3 hours now but it didn't change. As
 soon as I HUP'ed syslogd it worked.
 
 
 > Adjusting some of the following sysctls might change how long
 > you have to wait:
 > 
 > net.inet.ip.rtexpire
 > net.inet.ip.rtminexpire
 > net.inet.ip.rtmaxcache
 > 
 > (Some of the networking people could definitely provide more
 > details.)
 
 Ruslan Ermilov <ru@FreeBSD.org> sent me a mail and asked
 me to reproduce the behaviour with netcat. This worked
 properly so maybe it is really some issue with syslogd.
 I will try to isolate the problem as soon as Ruslan
 can reproduce it with syslogd.
 
 Thanks,
 
 	-Andre

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