From owner-freebsd-net@FreeBSD.ORG Mon Dec 19 05:20:10 2011 Return-Path: Delivered-To: freebsd-net@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 14C221065676 for ; Mon, 19 Dec 2011 05:20:10 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id 0382A8FC08 for ; Mon, 19 Dec 2011 05:20:10 +0000 (UTC) Received: from freefall.freebsd.org (localhost [127.0.0.1]) by freefall.freebsd.org (8.14.5/8.14.5) with ESMTP id pBJ5K95k057660 for ; Mon, 19 Dec 2011 05:20:09 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.5/8.14.5/Submit) id pBJ5K9r8057659; Mon, 19 Dec 2011 05:20:09 GMT (envelope-from gnats) Date: Mon, 19 Dec 2011 05:20:09 GMT Message-Id: <201112190520.pBJ5K9r8057659@freefall.freebsd.org> To: freebsd-net@FreeBSD.org From: "Eugene M. Zheganin" Cc: Subject: Re: kern/144572: [carp] CARP preemption mode traffic partially goes to backup node X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: "Eugene M. Zheganin" List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 19 Dec 2011 05:20:10 -0000 The following reply was made to PR kern/144572; it has been noted by GNATS. From: "Eugene M. Zheganin" To: bug-followup@FreeBSD.org, emz@norma.perm.ru Cc: Subject: Re: kern/144572: [carp] CARP preemption mode traffic partially goes to backup node Date: Mon, 19 Dec 2011 10:36:47 +0600 Please close this PR, looks like FreeBSD has nothing with it. In case someone will find this thread here, I should notice that I got this in setup like (A, B nodes with carp) <----ethernet---> catalyst <-----ethernet---> cisco 2811 Only the machines behind the 2811 router were affected. LAN was fine. In this scheme catalyst was correctly pointing the MAC address of the carp to the port of the master node, but the traffic from the cisco 2811 router was going straight to the MAC address of the backup node (not to the MAC address of the carp, which is rather weird, because the ARP cache entry for the target IP was also pointing to the carp MAC address). So I think this is the issue with cisco IOS, whic is, by the way, 12.4(17a). Thanks for the help and time. Sorry for the false alarm.