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Date:      Tue, 4 May 2004 06:35:03 -0700
From:      Kent Stewart <kstewart@owt.com>
To:        freebsd-questions@freebsd.org
Cc:        "J.D. Bronson" <jbronson@wixb.com>
Subject:   Re: arp issues...but WHY
Message-ID:  <200405040635.03640.kstewart@owt.com>
In-Reply-To: <6.1.0.6.2.20040504071343.024331b8@localhost>
References:  <6.1.0.6.2.20040504071343.024331b8@localhost>

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On Tuesday 04 May 2004 05:23 am, J.D. Bronson wrote:
> I have a FreeBSD 5.2.1 machine that has dual NICs.
> I would expect the following behavior if I placed both NICs
> on the same subnet (192.168.1.1 and 192.168.1.2 for example)...
>
> But in this case they are totally unique:
>
> NIC #1 - 10.10.10.1 255.255.255.0
> NIC #2 - 192.168.10.1 255.255.255.0
> Default gateway: 10.10.10.10
>
> I am using a single SWITCH for all of my connections.

This is the problem. You don't have two networks and since both NICs are 
on the same network, it complains.

Kent

>
> most of my LAN is on the '10' block, but I have a few machines and 1
> router that are on the '192' block.
>
> When I telnet into the freebsd machine from the '10.10.10.5' to the
> '10' block I see ARP comments on the console that I dont understand:
>
>
> arp: 10.10.10.5 is on fxp0 but got reply from 00:10:7b:80:04:40 on
> fxp1
>
> How is this possible? - the laptop has NO IP on the 192 block at all.
> I understand how to shut up these errors using 'sysctl' - but I
> wanted to know why I am seeing them in the first place?
>
>   -JDB
>
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-- 
Kent Stewart
Richland, WA

http://users.owt.com/kstewart/index.html



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