From mboxrd@z Thu Jan 1 00:00:00 1970 From: David L Stevens Subject: Re: [PATCH net-next 2/3] ipv6: mld: do not overwrite uri when receiving an mldv2 query Date: Fri, 26 Sep 2014 08:13:41 -0400 Message-ID: <54255875.20409@oracle.com> References: <1411455828-5196-1-git-send-email-dborkman@redhat.com> <1411455828-5196-3-git-send-email-dborkman@redhat.com> <54243C89.6060405@oracle.com> <542475E3.6030508@redhat.com> <5424A408.5000208@oracle.com> <542531FA.2070701@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: davem@davemloft.net, hannes@stressinduktion.org, netdev@vger.kernel.org To: Daniel Borkmann Return-path: Received: from aserp1040.oracle.com ([141.146.126.69]:48613 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751396AbaIZMOG (ORCPT ); Fri, 26 Sep 2014 08:14:06 -0400 In-Reply-To: <542531FA.2070701@redhat.com> Sender: netdev-owner@vger.kernel.org List-ID: On 09/26/2014 05:29 AM, Daniel Borkmann wrote: > On 09/26/2014 01:23 AM, David L Stevens wrote: > I'm fine with either suggestion. Actually the _current_ situation we're in is > that in IPv4 we _always_ use the current, uncached _sysctl_ tuned setting of URI > (independent of any protocol version); while in IPv6 we use the _cached_ sysctl > URI in case of MLDv1 and _always_ overwrite the URI in case of MLDv2 (even for > MLDv1). Are you suggesting that, we then better adapt using the maxdelay value > everywhere and adapt URI to it, plus having a boolean knob defaulting to off for > an admin to enforce always using the provided sysctl default setting and not > the snooped MLD? Yes. Definitely, IGMP and MLD, all versions, should do the same thing and I think that ought to use the querier MRC, if present and not overridden by an admin. Further, I think a version switch or failure to hear from a querier for qrv*qi ought to reset everything. +-DLS