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 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by huchra.bufferbloat.net (Postfix) with ESMTPS id A031021F39F for ; Wed, 24 Jun 2015 10:30:54 -0700 (PDT) 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/relay1/56100) with ESMTP id t5OHUpnb016028 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Wed, 24 Jun 2015 19:30:51 +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 t5OHUpER004395; Wed, 24 Jun 2015 19:30:51 +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 7385961FA4; Wed, 24 Jun 2015 19:30:51 +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 dJ5ClxUa3QN7; Wed, 24 Jun 2015 19:30:50 +0200 (CEST) Received: from pirx.pps.univ-paris-diderot.fr (unknown [78.194.40.74]) (Authenticated sender: jch) by mailhub.math.univ-paris-diderot.fr (Postfix) with ESMTPSA id 75A9261F9D; Wed, 24 Jun 2015 19:30:50 +0200 (CEST) Date: Wed, 24 Jun 2015 19:30:53 +0200 Message-ID: <87d20lau9e.wl-jch@pps.univ-paris-diderot.fr> From: Juliusz Chroboczek To: Dave Taht In-Reply-To: <87d20nmox1.wl-jch@pps.univ-paris-diderot.fr> References: <87wpyx3wnc.wl-jch@pps.univ-paris-diderot.fr> <87d20nmox1.wl-jch@pps.univ-paris-diderot.fr> User-Agent: Wanderlust/2.15.9 MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; format=flowed; 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]); Wed, 24 Jun 2015 19:30:51 +0200 (CEST) X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.7 (potemkin.univ-paris7.fr [194.254.61.141]); Wed, 24 Jun 2015 19:30:51 +0200 (CEST) X-Miltered: at korolev with ID 558AE94B.002 by Joe's j-chkmail (http : // j-chkmail dot ensmp dot fr)! X-Miltered: at potemkin with ID 558AE94B.000 by Joe's j-chkmail (http : // j-chkmail dot ensmp dot fr)! X-j-chkmail-Enveloppe: 558AE94B.002 from potemkin.univ-paris7.fr/potemkin.univ-paris7.fr/null/potemkin.univ-paris7.fr/ X-j-chkmail-Enveloppe: 558AE94B.000 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 : 558AE94B.002 on korolev.univ-paris7.fr : j-chkmail score : . : R=. U=. O=. B=0.000 -> S=0.000 X-j-chkmail-Score: MSGID : 558AE94B.000 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 Cc: bloat Subject: Re: [Bloat] BitTorrent and IPv6 [was: tackling torrent...] X-BeenThere: bloat@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: General list for discussing Bufferbloat List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 24 Jun 2015 17:31:24 -0000 >> It also appeared to show that transmission chose one and only one of the >> ipv6 addresses available on this box. > Yes. My code explicitly binds the UDPv6 socket to a single address. I've just been informed by a reliable source that Vuze's "mldht" plugin does not suffer from this issue -- it runs a different instance of the Kademlia algorithm on every address allocated to the host: "to the outside world it just looks like separate DHT nodes running on each port. you have to look closely to notice the shared internal state" I've also received a copy of the Kademlia routing table of their implementation running on a host with 256 distinct IPv4 addresses. -- Juliusz