From owner-freebsd-net@freebsd.org Wed Jan 11 20:13:12 2017 Return-Path: Delivered-To: freebsd-net@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 037CECAB9A2 for ; Wed, 11 Jan 2017 20:13:12 +0000 (UTC) (envelope-from ml@my.gd) Received: from mail-vk0-x22d.google.com (mail-vk0-x22d.google.com [IPv6:2607:f8b0:400c:c05::22d]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id B905517AD for ; Wed, 11 Jan 2017 20:13:11 +0000 (UTC) (envelope-from ml@my.gd) Received: by mail-vk0-x22d.google.com with SMTP id x75so63200688vke.2 for ; Wed, 11 Jan 2017 12:13:11 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=my-gd.20150623.gappssmtp.com; s=20150623; h=mime-version:from:date:message-id:subject:to:cc; bh=8QNI5aRwiCSrH8T3+dFooY58Qq4/GX0gTpKHdKzYxh8=; b=dUgknhtmHhy7kuv3URvmNzAQWhczDmWz3KZ83rfqUzSgUWvi9UDIBnC30dHoOPMtUT SgTVkOZcoeXCAqSHM4F0SitGMi3QJ1o/7FSUAtmHvT/Ju7iefp8C5oTqXUs9WRiEwOZR M9dtoJdpFQ183N9zYkAiHsdkP0v4AYMK26OYnJEmZus1IpqcuZgXAw8wiWMna+2NR5/m q/lqSTV/FXjZl7UnagKyqBHNZOue7M5uTyduz/7B757EFI81NYpOswRnIGiSI909uP5v o+oPUhx+7elnIH9B4+8uCVAs7ydCrbUNNIjC3TA+OcveJxPYt7CcD1Txps3Q2EKyEZ1e kBaA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to:cc; bh=8QNI5aRwiCSrH8T3+dFooY58Qq4/GX0gTpKHdKzYxh8=; b=eZqMS6N4zKFtSvD5SNxwSIDDa+f1EgyIRDyE2pMnFJacN5/1CyFZkTt+G2xnqKfcqT uHBlmb3sDqvvkCP0/8AJaTvyKIaL0g9Xm2fg2TcMOnDp+fAi4/qR4Riz/6jqVT+uVmcz OI08enkfhV2FW5XeNzP5joTxTbROivu0sFlrv63gPF4eb7TcmB2oePkkTTZbmFOenk1f D4kNAhL/qTycg+gB2qx98+etA8DMnoJokujC/ygZo3Tz4eo4RYxRS1CoVisH2bbc/e7g g/bLbvEukMUAcDHcdEPqfsLdPB7/Pv5r8Rz0IJww/uHvT5TyVUF4//zFVUxS4uQJo6AS 7UQw== X-Gm-Message-State: AIkVDXJNaxK/vub8pAHYREDwhqSB61gfB9HZ4s59mBPzSo2eImLgjrsRQA1FgbhoVdAtwyty5VltfksKTO42Pg== X-Received: by 10.31.205.129 with SMTP id d123mr5107213vkg.166.1484165590669; Wed, 11 Jan 2017 12:13:10 -0800 (PST) MIME-Version: 1.0 Received: by 10.103.48.213 with HTTP; Wed, 11 Jan 2017 12:13:10 -0800 (PST) From: Damien Fleuriot Date: Wed, 11 Jan 2017 21:13:10 +0100 Message-ID: Subject: [CARP] BUG #202510 - advertisements sourced from CARP IP cause double master situation To: "freebsd-net@freebsd.org" Cc: dfl@hipay.com Content-Type: text/plain; charset=UTF-8 X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 11 Jan 2017 20:13:12 -0000 Hello list, When using (legacy ?) syntax ipv4_addrs_$interf="1.2.3.4/32" in /etc/rc.conf, CARP advertisements are sent from subsequent addresses defined using ifconfig_$interf_aliasN="2.3.4.5/32" This causes master-master situations and, obviously, network problems. I have attached a patch to the PR [1] which moves ipv4_addrs_$interf processing higher up the chain in /etc/network.subr Despite dating back from 2015 the patch applies just fine here on 10-STABLE and corrects the behaviour without any noticeable side effects. Seeking people running 9.x and 11.x to help close this PR [2]. Would anyone kindly check and report ? [1] https://bugs.freebsd.org/bugzilla/attachment.cgi?id=160307&action=diff [2] https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=202510