From owner-freebsd-questions Sat Aug 4 13:31:20 2001 Delivered-To: freebsd-questions@freebsd.org Received: from guru.mired.org (okc-27-141-144.mmcable.com [24.27.141.144]) by hub.freebsd.org (Postfix) with SMTP id 0C30137B401 for ; Sat, 4 Aug 2001 13:31:18 -0700 (PDT) (envelope-from mwm@mired.org) Received: (qmail 71089 invoked by uid 100); 4 Aug 2001 20:31:16 -0000 From: Mike Meyer MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <15212.23443.993430.346040@guru.mired.org> Date: Sat, 4 Aug 2001 15:31:15 -0500 To: "Dan O'Connor" Cc: questions@freebsd.org, Subject: Re: kernel: arp messages In-Reply-To: <91663651@toto.iv> X-Mailer: VM 6.90 under 21.1 (patch 14) "Cuyahoga Valley" XEmacs Lucid X-face: "5Mnwy%?j>IIV\)A=):rjWL~NB2aH[}Yq8Z=u~vJ`"(,&SiLvbbz2W`;h9L,Yg`+vb1>RG% *h+%X^n0EZd>TM8_IB;a8F?(Fb"lw'IgCoyM.[Lg#r\ Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Dan O'Connor types: > > Can anyone explain why I keep getting messages in /var/log/messages > like > > this: > > Aug 4 06:10:28 p2 /kernel: arp: 192.168.1.1 is on fxp0 but got reply > from > > 00:04:28:96:44:00 on fxp1 > This is leaking in from your Cable/DSL connection. Someone else on your > side of the ISP's router is using the same local network addressing, but > they don't have their gateway configured properly (most likely a Windows > box). I think you're assuming things about his network topology that may not be true. The basic explanation is right, though - you've got two boxes trying to use that IP address on different networks. > The messages won't affect your network, but if you don't want to see > them, change your network addresses to something a little less common, > such as "192.168.53.x"... If it's actually coming from outside your local network, your should configure your firewall to throw them away. Anything coming from your outside world claiming to be from the local network, or one of the various reserved networks should be thrown away. http://www.mired.org/home/mwm/ Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message