From owner-freebsd-questions@FreeBSD.ORG Tue Oct 26 17:14:08 2004 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id EAEDF16A4CE for ; Tue, 26 Oct 2004 17:14:08 +0000 (GMT) Received: from smtp.techweavers.net (edtn016809.hs.telusplanet.net [161.184.241.45]) by mx1.FreeBSD.org (Postfix) with ESMTP id 939EE43D1D for ; Tue, 26 Oct 2004 17:14:08 +0000 (GMT) (envelope-from adams@techweavers.net) Received: (qmail 10297 invoked by uid 1003); 26 Oct 2004 17:14:12 -0000 Received: from 161.184.241.49 by smtp.techweavers.net (envelope-from , uid 89) with qmail-scanner-1.23 (clamscan: 0.80 Clear:RC:1(161.184.241.49):. Processed in 0.661018 secs); 26 Oct 2004 17:14:12 -0000 Received: from edtn016813.hs.telusplanet.net (HELO development2) (161.184.241.49) by edtn016809.hs.telusplanet.net with SMTP; 26 Oct 2004 17:14:11 -0000 From: "Adam Seniuk" To: "'Aaron Nichols'" Date: Tue, 26 Oct 2004 11:14:21 -0600 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Office Outlook, Build 11.0.6353 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1441 In-Reply-To: Thread-Index: AcS7fq+gyCnaBYhlSvuXC36zR+OnIAAAEDEA X-Qmail-Scanner-Message-ID: <109881085167510290@smtp.techweavers.net> Message-Id: <20041026171408.939EE43D1D@mx1.FreeBSD.org> cc: questions@freebsd.org Subject: RE: 2 Network Cards & 2 IP's? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 26 Oct 2004 17:14:09 -0000 This is more for redundancy, I have 2 on board nic's so if I can use both of them to do basic dns round robin load balancing and manual failover its more useful then one network card doing nothing :D -----Original Message----- From: Aaron Nichols [mailto:adnichols@gmail.com] Sent: Tuesday, October 26, 2004 11:10 AM To: Adam Seniuk Cc: questions@freebsd.org Subject: Re: 2 Network Cards & 2 IP's? On Tue, 26 Oct 2004 11:00:45 -0600, Adam Seniuk wrote: > > xl0 > > arp: 192.168.1.100 is on fxp0 but got reply from 00:02:b3:9f:74:89 on > > xl0 > > arp: 192.168.1.1 is on fxp0 but got reply from 00:07:e9:10:43:78 on > > I get these messages in my logs (quite a few) > > So I am not sure what is wrong. I noticed in another thread that freebsd > does not allow ips from the same netmask so how does the blundering windows > do it? Those messages are probably technically correct. Since both NIC's are on the same wire, they are both going to see the same ARP request/responses. I assume this error is just indicating that there is already an ARP entry for 192.168.1.100 which indicates that it can be found via fxp0 and it just saw an ARP response indicating that it is also available via xl0 - so which should it use? It's a bit confusing to a machine which has to select the correct NIC to send traffic out. What is the goal of all this? Typically for multipe IP's on the same subnet you would just use an alias - I assume that's not suitable in this case but am not sure why. Aaron