From owner-freebsd-net  Mon Nov 23 06:55:36 1998
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Date: Mon, 23 Nov 1998 09:54:59 -0500 (EST)
From: Patrick Nadeau <pnadeau@wave.home.com>
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To: net@FreeBSD.ORG
Subject: arp problem
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Hi, I just had a wierd 'problem' with arp over the weekend.

I noticed this line in /var/log/messages

Nov 21 13:37:12 foonly /kernel: arp: 10.0.0.1 moved 
    from 00:60:97:1f:18:ce to 00:20:35:e7:b5:bc

I have not done anything that would make this change, i.e.: change
the network card, add a new host to the network with ip 10.0.0.1
by mistake, issued any arp commands.


This is a dual homed host with two 3com 3c509's in it.  netstat -i
still says:

ep0   1500  <Link>      00.60.97.3a.2f.80  9245953 10800   122177     1     0
ep1   1500  <Link>      00.60.97.1f.18.ce    62020     0    73826     1     0

which makes sense to me since both's mac start with 00.60.97, i.e.
they are from the same manufacturer.

but now arp -a reports:

foonly.scimitar.org (10.0.0.1) at 0:20:35:e7:b5:bc permanent
cr323989-a.yec1.on.wave.home.com (24.112.82.27) at 0:60:97:3a:2f:80 permanent

Is this a bug in arp.  BTW I am using 2.2.1 with ipfw and natd with ep0
as the outside interface and ep1 as the inside interface.

Everything seems to still work fine though.  And I have since changed
it back with arp -S, no problem.  Any ideas?

Please send any replies by email.


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