From owner-freebsd-net@FreeBSD.ORG Mon Aug 13 14:46:20 2007 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 800BB16A418 for ; Mon, 13 Aug 2007 14:46:20 +0000 (UTC) (envelope-from jon.otterholm@ide.resurscentrum.se) Received: from mail1.cil.se (mail1.cil.se [217.197.56.125]) by mx1.freebsd.org (Postfix) with ESMTP id 0DB8913C4E8 for ; Mon, 13 Aug 2007 14:46:19 +0000 (UTC) (envelope-from jon.otterholm@ide.resurscentrum.se) Received: from onob2.irc.local ([192.168.2.10]) by mail1.cil.se with Microsoft SMTPSVC(6.0.3790.1830); Mon, 13 Aug 2007 16:34:13 +0200 Message-ID: <46C06C02.5090908@ide.resurscentrum.se> Date: Mon, 13 Aug 2007 16:34:42 +0200 From: Jon Otterholm User-Agent: Thunderbird 2.0.0.0 (X11/20070614) MIME-Version: 1.0 To: freebsd-net@freebsd.org Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 13 Aug 2007 14:34:13.0765 (UTC) FILETIME=[05195B50:01C7DDB7] Subject: proxy-arp X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 13 Aug 2007 14:46:20 -0000 Hi. I have a problem with proxy-arp entries. If I add an arp-entry: arp -s $hostip $routermac permanent pub only the router sends an arp and replies to it's own arp like: 15:40:02.074419 arp who-has $hostip tell $hostip 15:40:02.074663 arp reply $hostip is-at $routermac (oui Unknown) This is a problem because some clients interpret this as an ip-address conflict. In my case the router answers for arp on a bridge where all clients have their own member-interface and clients are prohibited to talk directly to each other. Have I completely misunderstood the proxy-arp function? IMHO the router should only answer to arp for $hostip to other clients than the one that actually have the ip-address. //Jon