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Date:      Thu, 14 Nov 1996 17:29:37 +0200 (EET)
From:      Petri Helenius <pete@sms.fi>
To:        Steve <shovey@buffnet.net>
Cc:        Seppo Kallio <kallio@cc.jyu.fi>, freebsd-questions@FreeBSD.ORG
Subject:   Re: arp info overwritten 
Message-ID:  <199611141529.RAA06384@silver.sms.fi>
In-Reply-To: <Pine.BSI.3.95.961114091125.17009V-100000@buffnet11.buffnet.net>
References:  <Pine.NEB.3.92.961114141254.10828A-100000@silmu.cc.jyu.fi> <Pine.BSI.3.95.961114091125.17009V-100000@buffnet11.buffnet.net>

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shovey@buffnet.net writes:
 > 
 > To me this looks like you put the same IP address on more than one box!

no, it's a cisco router thinking it has a better router for the
destination and proxy-arping it. Usually results from a misconfigured
netmask either in the host or the router. (proxy-arp is bad anyway and
Cisco's are stupid enough to have it on by default)

Pete
 > 
 > On Thu, 14 Nov 1996, Seppo Kallio wrote:
 > 
 > > 
 > > I am getting these error messages and it seems that it the connection to
 > > the ip-number (usually a DOS micro with NCSA Telnet) is lost from our
 > > FreeBSD 2.1.5 server.
 > > 
 > > 1. I assume the error is in network gateway unit at 00:00:0c:15:e7:0d
 > > 2. Can I somehow solve the problem in the FreeBSD box by adding some
 > >    routing info or something.
 > > 3. Can I dissable this overwriting somehow? How?
 > > 
 > > This problem and error message appears only in the FreeBSD nodes, not in
 > > Solaris, Linux, HP/UX etc. as far as I know.
 > > 
 > > Nov 14 12:00:01 silmu /kernel: arp info overwritten for 130.234.137.43 by
 > > 00:00:0c:15:e7:0d
 > > Nov 14 12:00:30 silmu /kernel: arp info overwritten for 130.234.137.43 by
 > > 08:00:07:94:74:83
 > > Nov 14 12:01:28 silmu /kernel: arp info overwritten for 130.234.137.46 by
 > > 00:00:0c:15:e7:0d
 > > Nov 14 12:01:55 silmu /kernel: arp info overwritten for 130.234..141.6 by
 > > 00:a0:24:67:9a:e4
 > > Nov 14 12:05:23 silmu /kernel: arp info overwritten for 130.234.138.11 by
 > > 00:00:0c:15:e7:0d
 > > Nov 14 12:05:23 silmu /kernel: arp info overwritten for 130.234.138.11 by
 > > 00:00:c0:d3:6f:a3
 > > 
 > > One network guru here is explaining the gateway unit is sometimes
 > > answering too fast to the caller or something, faster than the FreeBSD
 > > node.
 > > 
 > > 
 > > Seppo Kallio
 > > U of Jyvaskyla
 > > Finland
 > > 
 > > 
 > 



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