From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Ahern Subject: Re: [RFC PATCH] net: ipv6: Make address flushing on ifdown optional Date: Tue, 27 Jan 2015 07:55:18 -0700 Message-ID: <54C7A6D6.8020805@gmail.com> References: <1421263039-96198-1-git-send-email-dsahern@gmail.com> <20150122224033.6e2db5ce@urahara> <1422015737.2824.8.camel@stressinduktion.org> <20150127045653.GB13164@gospo.home.greyhouse.net> <1422351861.13969.5.camel@stressinduktion.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Cc: Stephen Hemminger , netdev@vger.kernel.org To: Hannes Frederic Sowa , Andy Gospodarek Return-path: Received: from mail-pd0-f179.google.com ([209.85.192.179]:45717 "EHLO mail-pd0-f179.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754360AbbA0OzV (ORCPT ); Tue, 27 Jan 2015 09:55:21 -0500 Received: by mail-pd0-f179.google.com with SMTP id v10so19263969pde.10 for ; Tue, 27 Jan 2015 06:55:20 -0800 (PST) In-Reply-To: <1422351861.13969.5.camel@stressinduktion.org> Sender: netdev-owner@vger.kernel.org List-ID: On 1/27/15 2:44 AM, Hannes Frederic Sowa wrote: >> You are probably correct that many will not switch, but this sysctl >> gives those who want to switch a nice option without having to carry >> extra kernel patches. I like it. > > I don't see any problem with the patch in general but DAD should > definitely happen on reenabling interfaces. Current behavior does not > seem fine to me. It's ok if this patch doesn't change this behavior now > but a follow-up one will be needed then. > > David, will you look after the DAD logic and do you plan a follow-up > patch? Yes, I do plan a follow-up patch for this change. Will work on that this week. From the discussion a second patch is needed to make sure DAD is done on a link up if there is an address configured. David