From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ed1-x531.google.com (mail-ed1-x531.google.com [IPv6:2a00:1450:4864:20::531]) (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 6F1E63CB35 for ; Fri, 19 Oct 2018 14:36:37 -0400 (EDT) Received: by mail-ed1-x531.google.com with SMTP id c26-v6so32297007edt.3 for ; Fri, 19 Oct 2018 11:36:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:content-transfer-encoding:mime-version:subject:message-id:date :to; bh=ShgE3VqysbjxK/Cj7t/aKe66gaWyAqOtgc7ue5G+zWY=; b=JyW9oSCX951yBBr07P5AlbBezdbgktbUCbNlaSUasHuszbaLj9eIV+gCf8/tk9tAvN yJb5aDpnn/VSJNQBIYxIHQzgr0uxFMNmizWT1E/RIo366wmCIz4FJbkHyDgb6IEqBte8 TDkIeixLaoR5SDrbcusTAj/CcI6dPCYW4oHHz3VTb67N2idUTdHEZbkkNOxDQsHyxQM2 4XlmKnP1B1mVcBO6qdM64Sue2tnWJIAmYwx7Z6MjfTv1wFmDhJ66Fy0tlV31BCcYn2CQ DgLI1L8sOJ8IjZGRC2imJomAcTPN+ZW7kpPqMwTpEpSfUNYhqNEbCFfH2h+jb/OZ4WSy hAkw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:content-transfer-encoding:mime-version :subject:message-id:date:to; bh=ShgE3VqysbjxK/Cj7t/aKe66gaWyAqOtgc7ue5G+zWY=; b=G98uUhGtwvMJ+UZ/auWL1ePIlKff8iaXhq/Ke4EVJEph1A15aq+bvFecEItEOTKW7q 20a/o+F1LBPskNPI4os+J0DOqAE9HsttLVNoz9YB5Zi9puwT2SDUANWebFI9dLXOCJ0i aCl271PpFH0CkKAzDC0faB9DpARTuuh33JSqCBgOi3w6b0o3juoQ9NSECcxxa/g54F7X m3YVPm+g1BGiZGlyLS7Vgg701br9CAiFjneL2cTb4iDa8jGftDykuehihIKBq9ELsHJ6 Kl6aqjyfH5slvKYKOvBLXvNPTcbntqsfJ1h01o9wrnsIo24yO5PEBDgMNsbm5kzLjJ9x B+Wg== X-Gm-Message-State: ABuFfoiMlRK2Ty23va5wQN2PBmMRWxMx8W2SnYBQ0PcaWaOk3/WqRdbA nni+E/sEQxy6zmfbK1eF6Re6/5q7 X-Google-Smtp-Source: ACcGV60qIPdo6ywZiw3z27wD+DOlLNGQtXOB+alTYEHKGofNJrrYz1kAPqY48NfqF0kHi0OGJFrVlg== X-Received: by 2002:a17:906:f254:: with SMTP id gy20-v6mr32355924ejb.2.1539974196185; Fri, 19 Oct 2018 11:36:36 -0700 (PDT) Received: from [192.168.253.110] (pool-64-223-237-198.port.east.myfairpoint.net. [64.223.237.198]) by smtp.gmail.com with ESMTPSA id h3-v6sm10173929ede.42.2018.10.19.11.36.34 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 19 Oct 2018 11:36:35 -0700 (PDT) From: Rich Brown Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Mime-Version: 1.0 (Mac OS X Mail 10.3 \(3273\)) Message-Id: Date: Fri, 19 Oct 2018 14:36:33 -0400 To: cerowrt-devel X-Mailer: Apple Mail (2.3273) Subject: [Cerowrt-devel] Wicked OT: 240.0.0.0/4 netblock 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: Fri, 19 Oct 2018 18:36:37 -0000 Sorry for distracting you from important things, but I have a question = for people more knowledgeable about routing than I am... There's a person on the OpenWrt forum who is asking about using the = 240.0.0.0/4 netblock for some (undefined) purpose. (If you're terminally = curious, or need another reason to yell at the monitor, you could look = at: = https://forum.openwrt.org/t/private-network-using-240-0-0-0-4-netblock/235= 43/5) MY QUESTION: I have always believed that this netblock is not routable. = Is this true? (A simple yes/no answer would be sufficient.) Many thanks! Rich PS I've seen the IANA advice that those addresses should not be used. = (See the final note on the thread.) I'm more interested in whether it = would ever work in practice: don't most upstreams block that address? PPS for all you non-Vermonters, "wicked" in this context means = "extremely", often in an interesting way=