From owner-freebsd-mobile@FreeBSD.ORG Wed Apr 16 10:53:29 2003 Return-Path: Delivered-To: freebsd-mobile@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id E1C6737B401 for ; Wed, 16 Apr 2003 10:53:29 -0700 (PDT) Received: from moo.sysabend.org (moo.sysabend.org [66.111.41.70]) by mx1.FreeBSD.org (Postfix) with ESMTP id 75FDC43FA3 for ; Wed, 16 Apr 2003 10:53:29 -0700 (PDT) (envelope-from ragnar@sysabend.org) Received: by moo.sysabend.org (Postfix, from userid 1004) id 6FB49CF5; Wed, 16 Apr 2003 10:53:29 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by moo.sysabend.org (Postfix) with ESMTP id 6E983C7E; Wed, 16 Apr 2003 10:53:29 -0700 (PDT) Date: Wed, 16 Apr 2003 10:53:29 -0700 (PDT) From: Jamie Bowden To: John Polstra In-Reply-To: <200304161736.h3GHabcu080661@strings.polstra.com> Message-ID: <20030416105033.H46401-100000@moo.sysabend.org> X-representing: Only myself. X-badge: We don't need no stinking badges. X-obligatory-profanity: Fuck X-moo: Moo. MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII cc: mobile@freebsd.org Subject: Re: "broadcast ping" message X-BeenThere: freebsd-mobile@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Mobile computing with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 16 Apr 2003 17:53:30 -0000 On Wed, 16 Apr 2003, John Polstra wrote: > In article , > Kan Cai wrote: > > > > This is a really dumb question. When I say it doesn't work, I mean there > > is no output on the screen as you do point-to-point ping normally. > > > > Actually it works, it won't show anything just because there is no > > ack for broadcasting. Using tcpdump can easily notice this thing. > > To make a FreeBSD system respond to broadcast pings, you have to set > the sysctl variable net.inet.icmp.bmcastecho to 1. Shouldn't the default be to DTRT and respond unless disabled? Until now, the only systems on my network that didn't respond to broadcast pings were my windows boxes, but I consider them broken by default. Why has the default behavior changed, and isn't this a POLA issue? Jamie Bowden -- "It was half way to Rivendell when the drugs began to take hold" Hunter S Tolkien "Fear and Loathing in Barad Dur" Iain Bowen