From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from korolev.univ-paris7.fr (korolev.univ-paris7.fr [IPv6:2001:660:3301:8000::1:2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id B560E3B25D; Thu, 28 Apr 2016 09:33:01 -0400 (EDT) Received: from potemkin.univ-paris7.fr (potemkin.univ-paris7.fr [IPv6:2001:660:3301:8000::1:1]) by korolev.univ-paris7.fr (8.14.4/8.14.4/relay1/56228) with ESMTP id u3SDWqgI031283 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Thu, 28 Apr 2016 15:32:52 +0200 Received: from mailhub.math.univ-paris-diderot.fr (mailhub.math.univ-paris-diderot.fr [81.194.30.253]) by potemkin.univ-paris7.fr (8.14.4/8.14.4/relay2/56228) with ESMTP id u3SDWqVL025061; Thu, 28 Apr 2016 15:32:52 +0200 Received: from mailhub.math.univ-paris-diderot.fr (localhost [127.0.0.1]) by mailhub.math.univ-paris-diderot.fr (Postfix) with ESMTP id 60E0361FE8; Thu, 28 Apr 2016 15:32:52 +0200 (CEST) X-Virus-Scanned: amavisd-new at math.univ-paris-diderot.fr Received: from mailhub.math.univ-paris-diderot.fr ([127.0.0.1]) by mailhub.math.univ-paris-diderot.fr (mailhub.math.univ-paris-diderot.fr [127.0.0.1]) (amavisd-new, port 10023) with ESMTP id AM5lhWi_5dzJ; Thu, 28 Apr 2016 15:32:51 +0200 (CEST) Received: from trurl.pps.univ-paris-diderot.fr (col75-1-78-194-40-74.fbxo.proxad.net [78.194.40.74]) (Authenticated sender: jch) by mailhub.math.univ-paris-diderot.fr (Postfix) with ESMTPSA id A8D1D61FE0; Thu, 28 Apr 2016 15:32:50 +0200 (CEST) Date: Thu, 28 Apr 2016 15:32:52 +0200 Message-ID: <87r3dpyi2j.wl-jch@pps.univ-paris-diderot.fr> From: Juliusz Chroboczek To: Dave Taht Cc: "babel-users@lists.alioth.debian.org" , make-wifi-fast@lists.bufferbloat.net, Michal Kazior , "cerowrt-devel@lists.bufferbloat.net" In-Reply-To: References: User-Agent: Wanderlust/2.15.9 MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.7 (korolev.univ-paris7.fr [IPv6:2001:660:3301:8000::1:2]); Thu, 28 Apr 2016 15:32:52 +0200 (CEST) X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.7 (potemkin.univ-paris7.fr [194.254.61.141]); Thu, 28 Apr 2016 15:32:52 +0200 (CEST) X-Miltered: at korolev with ID 57221104.005 by Joe's j-chkmail (http : // j-chkmail dot ensmp dot fr)! X-Miltered: at potemkin with ID 57221104.001 by Joe's j-chkmail (http : // j-chkmail dot ensmp dot fr)! X-j-chkmail-Enveloppe: 57221104.005 from potemkin.univ-paris7.fr/potemkin.univ-paris7.fr/null/potemkin.univ-paris7.fr/ X-j-chkmail-Enveloppe: 57221104.001 from mailhub.math.univ-paris-diderot.fr/mailhub.math.univ-paris-diderot.fr/null/mailhub.math.univ-paris-diderot.fr/ X-j-chkmail-Score: MSGID : 57221104.005 on korolev.univ-paris7.fr : j-chkmail score : . : R=. U=. O=. B=0.000 -> S=0.000 X-j-chkmail-Score: MSGID : 57221104.001 on potemkin.univ-paris7.fr : j-chkmail score : . : R=. U=. O=. B=0.000 -> S=0.000 X-j-chkmail-Status: Ham X-j-chkmail-Status: Ham Subject: Re: [Cerowrt-devel] [Babel-users] perverse powersave bug with sta/ap mode X-BeenThere: cerowrt-devel@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: Development issues regarding the cerowrt test router project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 28 Apr 2016 13:33:01 -0000 > Well, at least one ( probably several) of the devices I have in the > new lab has *very aggressive* power save, to where babel ipv6 > multicast traffic either doesn't sync up to the AP's request for > multicast (or the sta's), or it is merely completely suppressed by the > stack. (or lost due to a bug!)... Ok, that would explain why babeld is not falling over correctly -- since Hellos are being lost by the power management algorithm, the link quality of the redundant link is very low, so we only fall over when the currently used link has timed out rather than when its link quality has fallen below a given level. I'm still thinking it over, but right now I'm thinking that I'm not going to work around this kind of damange at the babeld level. -- Juliusz