From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ww0-f47.google.com (mail-ww0-f47.google.com [74.125.82.47]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority" (verified OK)) by huchra.bufferbloat.net (Postfix) with ESMTPS id 2630720067E for ; Thu, 27 Oct 2011 06:19:58 -0700 (PDT) Received: by wwg7 with SMTP id 7so3649897wwg.28 for ; Thu, 27 Oct 2011 06:19:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=message-id:subject:from:to:date:in-reply-to:references:content-type :x-mailer:content-transfer-encoding:mime-version; bh=cuPE47YzGMMcEMHgnzRtZMb4e+5rLN1FUIPG3l+DP2k=; b=YIxAfBZVbrI3G+QmdYHEDxl9RkHYtnd7mGUoDOCUmog3SlRl5bax7eGq1116hq8Qkl IE21V31ewXpzQ5gqjnISmbQ+fGKrd0pTBF5/lRAhXv306QymbrHG9FX20Ff8HR/X0dvd PqmDJmXYIO0rKc9eDXy1F5BdYVBhHeuZtvRH8= Received: by 10.216.180.8 with SMTP id i8mr5120745wem.26.1319721596890; Thu, 27 Oct 2011 06:19:56 -0700 (PDT) Received: from [143.167.205.230] (dyn205230.shef.ac.uk. [143.167.205.230]) by mx.google.com with ESMTPS id fw16sm9351702wbb.13.2011.10.27.06.19.53 (version=TLSv1/SSLv3 cipher=OTHER); Thu, 27 Oct 2011 06:19:54 -0700 (PDT) Message-ID: <1319721592.10744.12.camel@robert-N150P> From: Robert Bradley To: bloat@lists.bufferbloat.net Date: Thu, 27 Oct 2011 14:19:52 +0100 In-Reply-To: <20111027122230.GA23180@uio.no> References: <20111027122230.GA23180@uio.no> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.2.0- Content-Transfer-Encoding: 7bit Mime-Version: 1.0 Subject: Re: [Bloat] Another ECN problem report 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: Thu, 27 Oct 2011 13:19:59 -0000 On Thu, 2011-10-27 at 14:22 +0200, Steinar H. Gunderson wrote: > Hi, > > I thought some people might be interested in this: I visited the UK recently, > and it turns out Virgin Media, one of the bigger ISPs, ship NAT boxes that > drop all packets marked as ECN capable. At least I couldn't make any outgoing > connections from my Linux laptop until I turned off ECN. :-/ > > /* Steinar */ This caught me out too while visiting a friend of mine, since I'd forced my laptop to use ECN. I also use Virgin Media, but have one of the old cable modems, connected to a Netgear WNR2000 (so no CeroWRT testing for me yet). This setup works fine! The "Superhubs" started being rolled out about a year ago, and for what it's worth, online discussions sound pretty negative regardless. Despite the Virgin Superhubs being rebranded Netgear equipment, they drop ECN packets. I know the WNR2000 is Linux-powered, so maybe it's an issue with vxWorks models? -- Robert Bradley