From owner-freebsd-security  Thu Nov 15 14:25:32 2001
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From: "alexus" <ml@db.nexgen.com>
To: "Sven Wittig" <Sven.wittig@gmx.de>, <security@FreeBSD.ORG>,
	"Landon Stewart" <landons@uniserve.com>
References: <bulk.9491.20011114170248@hub.freebsd.org> <5.1.0.14.0.20011115134701.02d027b0@pop.uniserve.com>
Subject: Re: unusual  log in var/log/messages 
Date: Thu, 15 Nov 2001 17:25:24 -0500
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this is one is the closest to the truth

most likely this fbsd box acts as router and since it has two nic it mixes
mac and ips

solution:
create VLAN on your switch (if its possible) and put local and external
ethernet on diff vlans

you wont see this error in your life again..

----- Original Message -----
From: "Landon Stewart" <landons@uniserve.com>
To: "Sven Wittig" <Sven.wittig@gmx.de>; <security@FreeBSD.ORG>
Sent: Thursday, November 15, 2001 4:49 PM
Subject: Re: unusual log in var/log/messages


> Probably not.  Either someone changed their hardware or you are using an
> ADSL connection.  I've noticed that with my ADSL connection, because my
> ADSL modem acts as a bridge, sometimes the arp of my gateway is the MAC of
> the modem and sometimes its the MAC of the actual gateway router.
>
> I'm curious though too, so if anyone else knows, post it.
>
>
> At 10:41 PM 11/15/2001 +0100, Sven Wittig wrote:
> >Hi,
> >
> >I recently discovered this entry in my messages-logfile
> >
> >" Nov 14 15:10:44 leo2 /kernel: arp: 137.226.141.33 moved from
> >00:40:33:39:80:d1 to 00:50:bf:7e:6e:70 on de0"
> >
> >is this a kind of attack or what?
> >
> >Cu
>
>
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>


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