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Date:      Wed, 9 Apr 2008 17:08:19 +0300
From:      Nikos Vassiliadis <nvass@teledomenet.gr>
To:        freebsd-questions@freebsd.org
Cc:        Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>
Subject:   Re: by MAC blocking
Message-ID:  <200804091708.19523.nvass@teledomenet.gr>
In-Reply-To: <20080408184958.N25937@wojtek.tensor.gdynia.pl>
References:  <20080408184958.N25937@wojtek.tensor.gdynia.pl>

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On Tuesday 08 April 2008 19:52:05 Wojciech Puchar wrote:
> i use static arp on my network.
>
> all existing computers are set in with arp -f /etc/ethers
>
> and interface has STATICARP option set.
>
> trying to use unused IP address doesn't work - as should
>
> BUT trying to use allocated IP address with MAC out of the list -
> surprisingly works.
>
> more strange - when i ping such computer - i get 2 response (normal+DUP)
>
> how to make it completely work?

It works here as documented. Are there any third party(not
FreeBSD) devices on the network? perhaps proxying arp?
I would disable arp completely, reboot third party devices
and use tcpdump -e to see what's going on.

Nikos



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