From owner-freebsd-net@FreeBSD.ORG Fri Apr 11 00:26:51 2003 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 5FEAE37B401; Fri, 11 Apr 2003 00:26:51 -0700 (PDT) Received: from mx.nsu.ru (mx.nsu.ru [212.192.164.5]) by mx1.FreeBSD.org (Postfix) with ESMTP id 540E743F3F; Fri, 11 Apr 2003 00:26:50 -0700 (PDT) (envelope-from fjoe@iclub.nsu.ru) Received: from mail by mx.nsu.ru with drweb-scanned (Exim 3.35 #1 (Debian)) id 193swB-0006kD-00; Fri, 11 Apr 2003 14:27:03 +0700 Received: from iclub.nsu.ru ([193.124.215.97] ident=root) by mx.nsu.ru with esmtp (Exim 3.35 #1 (Debian)) id 193sw3-0006Xp-00; Fri, 11 Apr 2003 14:26:55 +0700 Received: from iclub.nsu.ru (fjoe@localhost [127.0.0.1]) by iclub.nsu.ru (8.12.9/8.12.9) with ESMTP id h3B7Pnud016738; Fri, 11 Apr 2003 14:25:49 +0700 (NSS) (envelope-from fjoe@iclub.nsu.ru) Received: (from fjoe@localhost) by iclub.nsu.ru (8.12.9/8.12.9/Submit) id h3B7Peoq016733; Fri, 11 Apr 2003 14:25:40 +0700 (NSS) Date: Fri, 11 Apr 2003 14:25:40 +0700 From: Max Khon To: Motonori Shindo Message-ID: <20030411142540.A14117@iclub.nsu.ru> References: <3E942121.7A3647EB@pipeline.ch> <20030411.161056.71083042.mshindo@mshindo.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <20030411.161056.71083042.mshindo@mshindo.net>; from mshindo@mshindo.net on Fri, Apr 11, 2003 at 04:10:56PM +0900 X-Spam-Status: No, hits=-3.0 required=5.0 tests=IN_REP_TO,QUOTED_EMAIL_TEXT,REFERENCES,SPAM_PHRASE_00_01, USER_AGENT,USER_AGENT_MUTT version=2.43 X-Envelope-To: mshindo@mshindo.net, oppermann@pipeline.ch, tmm@freebsd.org, freebsd-net@freebsd.org cc: tmm@freebsd.org cc: freebsd-net@freebsd.org Subject: Re: Bug in ARP requests X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 11 Apr 2003 07:26:51 -0000 hi, there! On Fri, Apr 11, 2003 at 04:10:56PM +0900, Motonori Shindo wrote: > From: Andre Oppermann > Subject: Bug in ARP requests > Date: Wed, 09 Apr 2003 15:33:21 +0200 > > > I got hit by this pretty hard when I connected a FreeBSD/Zebra box > > to AMSIX. Appearently the Cisco and Juniper boxes don't answer to > > broken ARP requests if the target hardware address field is not set > > to NULL but filled with random memory junk. While debugging this we > > got really confused by the tcpdumps... Ethereal saved the day because > > it has a much nicer display than tcpdump. > > I also came accross this problem when I was testing the equipment > (wireless access point, in fact) made by the company I currently work > for. At that time, I thought that it was specific my company's > equipment, but now I'm amezed to know that there are so many > networking equipments that don't accept such a bogus ARP Request. > > BTW, tcpdump prints out the target hardware address in ARP Request if > it isn't all zero and that made me realized that the problem was > caused by FreeBSD's ARP request. tcpdump saved a day for me:-) ok, rev 1.97 MFC'ed a few minutes ago /fjoe