From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH v2] bonding: check if clients MAC addr has changed Date: Wed, 30 Jun 2010 13:52:49 -0700 (PDT) Message-ID: <20100630.135249.73361702.davem@davemloft.net> References: <1277835879-26834-1-git-send-email-fleitner@redhat.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: bonding-devel@lists.sourceforge.net, fubar@us.ibm.com, netdev@vger.kernel.org, gospo@redhat.com To: fleitner@redhat.com Return-path: Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:38284 "EHLO sunset.davemloft.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752867Ab0F3Uwh (ORCPT ); Wed, 30 Jun 2010 16:52:37 -0400 In-Reply-To: <1277835879-26834-1-git-send-email-fleitner@redhat.com> Sender: netdev-owner@vger.kernel.org List-ID: From: Flavio Leitner Date: Tue, 29 Jun 2010 15:24:39 -0300 > When two systems using bonding devices in adaptive load > balancing (ALB) communicates with each other, an endless > ping-pong of ARP replies starts between these two systems. > > What happens? In the ALB mode, bonding driver keeps track > of each client connected in a hash table, so it can do the > receive load balancing (RLB). This hash table is updated > when an ARP reply is received, then it scans for the client > entry, updates its MAC address and flag it to be announced > later. Therefore, two seconds later, the alb monitor runs > and send for each updated client entry two ARP replies > updating this specific client. The same process happens on > the receiving system, causing the endless ping-pong of arp > replies. > > See more information including the relevant functions below: ... > Signed-off-by: Flavio Leitner > Signed-off-by: Jay Vosburgh Applied, thanks. Probably one of the best networking commit log messages I've seen in a long time. Nice work.