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Date: Thu, 14 Nov 1996 16:38:45 +0200 (EET)
From: Seppo Kallio  <kallio@cc.jyu.fi>
To: Steve <shovey@buffnet.net>
cc: freebsd-questions@freebsd.org
Subject: Re: arp info overwritten 
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On Thu, 14 Nov 1996, Steve wrote:

>
> To me this looks like you put the same IP address on more than one box!

Yes it seems but this other is in every case the same 00:00:0c:15:e7:0d

It seems, it is changing it's ip number 2 times per minute because it is
routing ip packets inside our net.

I know it is a Cisco routing device + we are using "classless"
internet (variable length masks).

I am not expert in routing etc. just trying to run some FreeBSD nodes.

Network gurus admit there is a problem in the network, but why only
FreeBSD nodes seem to suffer from it?

Seppo

>
> On Thu, 14 Nov 1996, Seppo Kallio wrote:
>
> >
> > I am getting these error messages and it seems that 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
>