From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm1-x336.google.com (mail-wm1-x336.google.com [IPv6:2a00:1450:4864:20::336]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id 8F1A93CB36; Sun, 24 Mar 2019 07:08:36 -0400 (EDT) Received: by mail-wm1-x336.google.com with SMTP id z24so2848191wmi.5; Sun, 24 Mar 2019 04:08:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=ZmQSLnJX05mwooCb6yVoVLslChcmQ/xsFeZQuo5KdeI=; b=csyp0rlMgCyd8/GqViXgpfJTLcTSmevK5do7Etf001ux+Ewrtbf9b6J3X9Pe+SXTDT +RW8agXXC/1GuW2EkgN7Mfjb18sBbi32ugkFjkseqKqNoMEWlbxgxiiYGDe/0xOghfq3 yZN7oJAa0doftogP8PLlJPMapYl9SSTJ0hmm7mu1qhp7JcviHAeYljQBFf+BvJ0w0nib O6PBkCwxom4aMGoJt8XiJtzUyQt5D58dJnSMMEFVEaxPyPVB+4TQXdMFcMg2kcHFeN9E 11DOHYbPT/1DpLxt0cKfX0as6zV/Nv7h5uarI7gVsUI6AEQAnU1O88VfkH9sDgUrYW2h SuTw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=ZmQSLnJX05mwooCb6yVoVLslChcmQ/xsFeZQuo5KdeI=; b=LDYqu9NkUmnz74d22htQpj2caAfzgEBYai8i8ztF0VmYM3zMDS7gTNBhSJ+WLx80+y LydQ++kzpsjvANcZXuyZhLMLo46C2N7+Oj5k/PKZ8+uJnnP06si59Lti3lYrOfNQ0/U2 VE9CEzgQDbpy4lmwdQk8HXq9Lh8ohgXZVapBmR8l7qfHxKT4XTnPhhl0PCj3wHEIY9Fw 61Qlavq39mA/MQS2xVHwev43Okjr0mgwqi8LLOnws11ftQtlWhe6haVkYqPPNLRMBUEw w0a09LGD39AbhTgw8N4W8/CU1J+j4hdmvputAZsRNT/sAUxXi2hFQZgeUtCgCUhcuOxV xDug== X-Gm-Message-State: APjAAAXLvhAV4JjACe74r3n6PNP+41KK2AGtUT0VqnVGeF0gYp9YVksr 6dIii4wUTOHIC/8IRItaAUHKLx7QArM= X-Google-Smtp-Source: APXvYqxH8J8DfsjQ/YvIDAbEeFSMYZslfzT/JzMnEMQ8zI24/i6k2CzOgSWJHU9yvgRSvDw88yvO9g== X-Received: by 2002:a1c:44:: with SMTP id 65mr7751934wma.127.1553425715712; Sun, 24 Mar 2019 04:08:35 -0700 (PDT) Received: from [192.168.8.114] (ip-37-188-164-92.eurotel.cz. [37.188.164.92]) by smtp.gmail.com with ESMTPSA id b3sm15921724wrx.57.2019.03.24.04.08.34 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 24 Mar 2019 04:08:35 -0700 (PDT) Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 11.5 \(3445.9.1\)) From: Jonathan Morton In-Reply-To: Date: Sun, 24 Mar 2019 12:08:33 +0100 Cc: Dave Taht , ecn-sane@lists.bufferbloat.net, Cake List Content-Transfer-Encoding: quoted-printable Message-Id: References: <3F3F78F9-8F97-42F2-9005-F8449489BECF@gmail.com> <42B7B2FB-94FC-4CA6-B75E-CADB61FE3173@gmail.com> <6047E899-078F-4E08-A29C-B87D268A4E5E@heistp.net> <69EA569B-4AD2-4C4B-937B-9ABDD563B120@gmail.com> To: Pete Heist X-Mailer: Apple Mail (2.3445.9.1) Subject: Re: [Ecn-sane] The two SCE tests I have in mind X-BeenThere: ecn-sane@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: Discussion of explicit congestion notification's impact on the Internet List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 24 Mar 2019 11:08:36 -0000 > On 24 Mar, 2019, at 12:05 pm, Pete Heist wrote: >=20 > tcpdump -r file.pcap udp port 2112 and greater 80 and "ip[1] !=3D = 0x1=E2=80=9D >=20 > =E2=80=9Cgreater 80=E2=80=9D ignores the handshake packets and 0x1 is = whatever TOS value we want to make sure the packets contain. We can use = different filters for other traffic. Bear in mind that the TOS byte contains ECN as well as DSCP fields, and = the latter is left-justified. - Jonathan Morton