From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from vps.slashdirt.org (vps.slashdirt.org [144.91.108.218]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id B36643CB47 for ; Fri, 13 Dec 2019 09:21:59 -0500 (EST) Received: from mail.zigoo.net (localhost [127.0.0.1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by vps.slashdirt.org (Postfix) with ESMTPSA id B2942600A7; Fri, 13 Dec 2019 15:21:58 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 vps.slashdirt.org B2942600A7 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=slashdirt.org; s=mail; t=1576246918; bh=fgF9w+HxCXwJ+RxXS+3Bk5W4+86zlAuSkLDZlydbi4A=; h=Date:From:Subject:To:Cc:In-Reply-To:References:From; b=L8rqbjhPOg9qxNYTRiTDc9BNgzHJd9L1Ar8ZyKHBXar8kubLSunezq7qw4xCPHRdd RIsmDmw5zqUNmc/D7AijRqKYOUUJx4cHlpcz26LBV08zYpyfXmk7mNS+aBXYQfc6Wa 4JFRYyOcN+Jr0ALujc2vaPP//8QayNzUqOmdHGG0= MIME-Version: 1.0 Date: Fri, 13 Dec 2019 14:21:58 +0000 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Mailer: RainLoop/1.13.0 From: "Thibaut" Message-ID: <68b10e0a9ee0fd087dfc4f15e2c66328@slashdirt.org> To: "Sebastian Moeller" Cc: cake@lists.bufferbloat.net In-Reply-To: <623C176A-C78F-4FFA-905D-C59F0131804F@gmx.de> References: <623C176A-C78F-4FFA-905D-C59F0131804F@gmx.de> <1d359153abfc413b4f61c647437427d6@slashdirt.org> Subject: Re: [Cake] Trouble with CAKE X-BeenThere: cake@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: Cake - FQ_codel the next generation List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 13 Dec 2019 14:21:59 -0000 Hi Sebastian,=0A=0ADecember 13, 2019 3:15 PM, "Sebastian Moeller" wrote:=0A=0A> Hi Thibaut,=0A> =0A> so ADSL is both special and= precious, may I recommend to follow the instructions on=0A> https://gith= ub.com/moeller0/ATM_overhead_detector? =0A=0AI will give it a try.=0A=0A>= This will either confirm the overhead settings,=0A> or more likely "expl= ode" if the freeebox truely tunnels all IPv4 data through IPv6.=0A=0AIt d= oes, this is a confirmed fact (and in fact trying to connect with my VDSL= modem the DSLAM only speaks IPv6: I could tcpdump encapsulated frames fr= om the BR containing IPv4 data that were destined to other subscribers - = an unpleasant side effect of map-t "shared IPv4": by default free splits = every IPv4 between 4 subscriber (by splitting the port range). You have t= o actively ask for a "full stack IP" to turn that off).=0A=0A> In both ca= ses=0A> the results should be interesting. As a quick test, what is the t= extual output from the "Share Your=0A> Results" box on https://www.speedg= uide.net/analyzer.php?=0A=0AI'll report when the buildslave is done uploa= ding :)=0A=0A> I would not be amazed if the issue might be related to hav= ing a whoping 40 bytes more of=0A> unaccounted for per-packet-overhead (i= n combination with ATM/AAL5's lovely per packet padding). But=0A> that mi= ght all be moot if it is/was caused by a kernel issue.=0A=0A*nod*=0A=0ATh= anks,=0AThibaut