From owner-freebsd-questions@FreeBSD.ORG  Tue Apr  8 16:52:29 2008
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Delivered-To: freebsd-questions@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id C1812106564A
	for <freebsd-questions@freebsd.org>;
	Tue,  8 Apr 2008 16:52:29 +0000 (UTC)
	(envelope-from wojtek@wojtek.tensor.gdynia.pl)
Received: from wojtek.tensor.gdynia.pl (wojtek.tensor.gdynia.pl
	[IPv6:2001:4070:101:2::1])
	by mx1.freebsd.org (Postfix) with ESMTP id 806208FC1E
	for <freebsd-questions@freebsd.org>;
	Tue,  8 Apr 2008 16:52:21 +0000 (UTC)
	(envelope-from wojtek@wojtek.tensor.gdynia.pl)
Received: from wojtek.tensor.gdynia.pl (localhost [IPv6:::1])
	by wojtek.tensor.gdynia.pl (8.14.2/8.13.8) with ESMTP id m38Gq5Ht025949
	for <freebsd-questions@freebsd.org>;
	Tue, 8 Apr 2008 18:52:05 +0200 (CEST)
	(envelope-from wojtek@wojtek.tensor.gdynia.pl)
Received: from localhost (wojtek@localhost)
	by wojtek.tensor.gdynia.pl (8.14.2/8.13.8/Submit) with ESMTP id
	m38Gq5mR025946 for <freebsd-questions@freebsd.org>;
	Tue, 8 Apr 2008 18:52:05 +0200 (CEST)
	(envelope-from wojtek@wojtek.tensor.gdynia.pl)
Date: Tue, 8 Apr 2008 18:52:05 +0200 (CEST)
From: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>
To: freebsd-questions@freebsd.org
Message-ID: <20080408184958.N25937@wojtek.tensor.gdynia.pl>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed
Subject: by MAC blocking
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 08 Apr 2008 16:52:29 -0000

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?