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Date:      Sun, 15 Nov 1998 09:30:18 +1300
From:      "Dan Langille" <junkmale@xtra.co.nz>
To:        "John M. Heaton" <vorkus@city-net.com>
Cc:        freebsd-questions@FreeBSD.ORG
Subject:   Re: Firewall problem/strange message
Message-ID:  <199811142029.JAA21507@cyclops.xtra.co.nz>
In-Reply-To: <01BE0FDE.53214C00@dialup320.city-net.com>

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On 14 Nov 98, at 14:51, John M. Heaton wrote:

> I keep getting the following type message.  This one is from the security
> mail message sent to root.  As far as I know I don't have a machine with
> this address. Subnet mask is 255.255.255.0.  Is this a problem? Any help
> would be appreciated.
> 
> John
> 
> 
> firewall kernel log messages:
> > from 00:60:08:a6:06:fe to 00:60:08:a6:0e:14
> > arp: 192.168.0.202 moved from 00:60:08:a6:0e:14 to 00:60:08:a6:06:fe

I have had the same problem.  It means that two NICs are reporting the 
same IP address.  Sometimes this is hard to track done.  I was running a 
local DNS server.  I ran nslint over the zone files and found the problem. 

I don't have my notes.  But I'll bet that 192.168.0.202 is assigned to two 
different machines.  One has the MAC address 00:60:08:a6:0e:14.  The other 
has 00:60:08:a6:06:fe.

--
Dan Langille
The FreeBSD Diary
http://www.FreeBSDDiary.com/freebsd

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