From owner-freebsd-net@FreeBSD.ORG Tue Jun 8 01:24:53 2010 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 81F101065670 for ; Tue, 8 Jun 2010 01:24:53 +0000 (UTC) (envelope-from ozkan.kirik@gmail.com) Received: from mail-ww0-f54.google.com (mail-ww0-f54.google.com [74.125.82.54]) by mx1.freebsd.org (Postfix) with ESMTP id 1C9688FC2B for ; Tue, 8 Jun 2010 01:24:52 +0000 (UTC) Received: by wwb22 with SMTP id 22so4061779wwb.13 for ; Mon, 07 Jun 2010 18:24:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:date:message-id :subject:from:to:content-type; bh=DxdrQGfYcw0ohM9KFWXpKQH6P1R3p9rQLsuQxV5A+hc=; b=QWa1azYOxnP16bvsR9iPPbVLCgPfPycIVeA8iUEYwoROj00BwtfeEpDDNfEHsS82/k YgyWt62TB2PjubDKxMYI/M/UuycFIFNQ0gPhJb1+aA8Ter60pWBMvkC/L678mVdo2gpc HCzUS0CzMOD1pNviExGnL4ATxxOyRZi9u7//s= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type; b=EWE0CRSxUlqkU2+lSsUqPWIyB7rOTpcZ1bx5lLv5IohOLbK1lhrRKLeYNzquqRMDjM 2o8j6e5Q5A1SiLHoRfIch5UuYxDIH2gJR1YygJVlk1WeOb9jCQuLT6991+ug0G/IU/tJ QKoqViKqfnK6nPyTVADYsjr9j+tJwzrDA9kXo= MIME-Version: 1.0 Received: by 10.216.87.74 with SMTP id x52mr1167429wee.4.1275813743267; Sun, 06 Jun 2010 01:42:23 -0700 (PDT) Received: by 10.216.13.205 with HTTP; Sun, 6 Jun 2010 01:42:23 -0700 (PDT) Date: Sun, 6 Jun 2010 11:42:23 +0300 Message-ID: From: =?ISO-8859-1?Q?=D6zkan_KIRIK?= To: freebsd-net@freebsd.org Content-Type: text/plain; charset=ISO-8859-1 Subject: Default router changes unexpectedly 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: Tue, 08 Jun 2010 01:24:53 -0000 Hi, I am using FreeBSD 7.3 STABLE-201004. IPFW + In kernel NAT and if_vlan used mostly. System has 3 em interfaces. Scenario is classical, LAN DMZ WAN. Sometimes default router changes unexpectedly. I inspected logs if someone logged in or changed route. I found nothing. This problem repeats at least 1 times per day. I wrote a shell script which monitors the default router. I saw that sometimes netstat -rn shows that default router is changed as 10.3.1.64 or 10.5.3.189 etc. which are client IP addresses but routing still routes to right router 212.X.Y.Z . After a while, routing really fails. This problem occurs at multiple routing table supported freebsd versions. I dont use this feature. Regards, Ozkan KIRIK Mersin University @ Turkey