From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH] bonding: Gratuitous ARP gets dropped when first slave added Date: Wed, 12 Aug 2015 14:38:29 -0700 (PDT) Message-ID: <20150812.143829.2181531591935198645.davem@davemloft.net> References: <20150811145723.GA18921@oracle.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, j.vosburgh@gmail.com, vfalico@gmail.com, gospo@cumulusnetworks.com To: venkat.x.venkatsubra@oracle.com Return-path: Received: from shards.monkeyblade.net ([149.20.54.216]:60190 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751084AbbHLVia (ORCPT ); Wed, 12 Aug 2015 17:38:30 -0400 In-Reply-To: <20150811145723.GA18921@oracle.com> Sender: netdev-owner@vger.kernel.org List-ID: From: Venkat Venkatsubra Date: Tue, 11 Aug 2015 07:57:23 -0700 > When the first slave is added (such as during bootup) the first > gratuitous ARP gets dropped. We don't see this drop during a failover. > The packet gets dropped in qdisc (noop_enqueue). > > The fix is to delay the sending of gratuitous ARPs till the bond dev's > carrier is present. > > It can also be worked around by setting num_grat_arp to more than 1. > > Signed-off-by: Venkat Venkatsubra Applied, thanks.