From owner-freebsd-net@FreeBSD.ORG Mon Mar 18 21:22:17 2013 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by hub.freebsd.org (Postfix) with ESMTP id 3F26E1A6 for ; Mon, 18 Mar 2013 21:22:17 +0000 (UTC) (envelope-from rganascim@gmail.com) Received: from mail-we0-x236.google.com (mail-we0-x236.google.com [IPv6:2a00:1450:400c:c03::236]) by mx1.freebsd.org (Postfix) with ESMTP id D87E1BDE for ; Mon, 18 Mar 2013 21:22:16 +0000 (UTC) Received: by mail-we0-f182.google.com with SMTP id t57so5374932wey.13 for ; Mon, 18 Mar 2013 14:22:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:x-received:date:message-id:subject:from:to :content-type; bh=alCZY2HU2dEMw301SPbhBffhPrQTP4/amFhiQ1Wsndc=; b=kcVNyBFe9590SeBSJEsuY5hpONt/iSKPIxoGk3qr7bRuzdDSsiev4kFrDFZ7LFsjoS zatNrlqO97Q7TyhsNPSCKXs7QDt46JQdXeSEB2MoOnsoP118JAEymkBlj/hJis7um7gY ef3hgOW5pr6SDFP3tW4svYZryAbZ9CAmlkugcgv0at+bEDv9LI1Pwic0A3MkKEpdEinC nv0RL6Y4E8KIBEk7RhMoeSFP3GtltV2qh4d4AwDiXfNnlotdXUA4ewsxwBZw+Odni3sz d1/UgLpYUIxj1Xj6xHsDRt3qUbNOmFq6Q50aMwUv6QrzHggHYsYj2+R/dBOZ9GwTm5fv zmKg== MIME-Version: 1.0 X-Received: by 10.180.74.131 with SMTP id t3mr898869wiv.23.1363641736032; Mon, 18 Mar 2013 14:22:16 -0700 (PDT) Received: by 10.216.34.3 with HTTP; Mon, 18 Mar 2013 14:22:15 -0700 (PDT) Date: Mon, 18 Mar 2013 18:22:15 -0300 Message-ID: Subject: Carp strange behavior From: Rafael Ganascim To: freebsd-net@freebsd.org Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.14 X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 18 Mar 2013 21:22:17 -0000 Hi list, I have multiple FreeBSD firewalls with carp working well. I have no problem and the vast majority of firewalls works perfectly. But now, I'm with problems with a simple firewall cluster with carp that the state randomly goes to MASTER and randomly returns to BACKUP. Looking to the L1/L2 tests, I have no rx/tx erros, buffers miss, in/out drops , etc. The physical conection between the firewalls looks good. Monitoring the interfaces/buffers/mbufs/virtual memory with netstat, vmstat.... no errors was found. Using tcpdump, I can see that in the exact moment of the state change, the currently master's firewall stop sending multicasts to the 224.0.0.18 during some seconds and the state change occurs. The system: # uname -a FreeBSD fw-cj-01 9.1-RELEASE FreeBSD 9.1-RELEASE #0: Thu Feb 28 13:18:41 BRT 2013 root@fw-new-01:/usr/obj/usr/src/sys/DEDICr9v1CoreX64 amd64 Now, how can I debug why carp stops to send multicast packets? Best Regards, Rafael