From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qk1-x72e.google.com (mail-qk1-x72e.google.com [IPv6:2607:f8b0:4864:20::72e]) (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 E96D03CB35 for ; Fri, 19 Oct 2018 14:53:34 -0400 (EDT) Received: by mail-qk1-x72e.google.com with SMTP id 12-v6so21629530qkj.10 for ; Fri, 19 Oct 2018 11:53:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc:content-transfer-encoding; bh=PSX+0xX//CGC5uLE29uieDivd+ZPcG7lnG276ZVHPic=; b=mjg4LRPQ1jhOgzc7Xzi7bkQfgk4clMWycIw5rcLkjsNiryXg7lprhfS2YoakC+WKtM f0pvYu0Ms3ckbj9pTEJPUGYNP61G7pn6V39IOmAwdrPsFskQTXHzR7A1g+2zEIORdwZJ 3Fweg9+RXk4QnCzZ1aEJs0Qv3jmKiFpAACHrsGXJflj7VkqyEtgPue32W3tQy068X36Q D6qB/+/41ERLM2R/+F7hJw7cqSz5mEXEmuqAOG8Scfc/+jCjDkh8v3MYLPI386vB1TAm /GE6JyObvNWXSLJ8+zfVlYjjfbuaFPHcFRqVGnUmO3BqF86P4iLyQgoLHeuv6FR5Y0Gn Cdyg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc:content-transfer-encoding; bh=PSX+0xX//CGC5uLE29uieDivd+ZPcG7lnG276ZVHPic=; b=ngBd+HIrWuh89JXxcdmb+pS1GByTiFQ3HF6Xtt7Xf+YHe131OJXec/gk/5dmjYz6yi gt0AIloHM53KFGcIMho0/8SKm6Sg9qgb+X2cOSJDg90t/yc/dXPn7Pstwz/9EywFJxeZ SwbP8MRs57ms/g/BWaPgWOp7KFsd+FruvNY5G5yaGVBmYNQSIJCMkl4Przd/tpwU6HyW /BblMD8rkKgsx2QPNlS2/5Buimqf+nWxsbmU2P1X7bDBYypfqO26/S1ZZvaCly8UvB+q GO4a13fruJ9e4D7lANuy5PA7v3TLM2oU7ZEGljTiGaL2BD5wHJIt6RcP/jFaQ8GGUCO+ 0+Iw== X-Gm-Message-State: ABuFfoibco80u58v4eyDaIr1MCLKWNwfhPRGf52HEt+xiHlqEdGZ96Nc 02J5BplATMMDYi5hvXGpPrWEiqoe2G7kwSTjIpA= X-Google-Smtp-Source: ACcGV63p+qxinz5hhNJnMO35s9Oq4uw9qbPZ1+szCHCr+jFrKQl1O5M2jIvknt8WYOTveURNnSKw/k3z1i5onrs4kfY= X-Received: by 2002:a37:4f92:: with SMTP id d140-v6mr33437312qkb.17.1539975214355; Fri, 19 Oct 2018 11:53:34 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Dave Taht Date: Fri, 19 Oct 2018 11:53:21 -0700 Message-ID: To: "Richard E. Brown" Cc: cerowrt-devel@lists.bufferbloat.net Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Subject: Re: [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 18:53:35 -0000 On Fri, Oct 19, 2018 at 11:36 AM Rich Brown wrote= : > > Sorry for distracting you from important things, but I have a question fo= r 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/23543/5) > > MY QUESTION: I have always believed that this netblock is not routable. I= s this true? (A simple yes/no answer would be sufficient.) 240 is routable if you don't use a standard martians list. http://www.radb.net/query/?keywords=3Dfltr-martian blocks 224/3. It may not be routable on older versions of windows. It may not even be assignable on some OSes and tools, currently. It's certainly blocked on many a bogon filter and in our bcp38 package An attempt to make "E" useful died a decade ago: https://tools.ietf.org/html/draft-fuller-240space-02 Still, it would be a better world with 268m more routable ips in it, wouldn't it? > Many thanks! > > Rich > > PS I've seen the IANA advice that those addresses should not be used. (Se= e the final note on the thread.) I'm more interested in whether it would ev= er 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 > _______________________________________________ > Cerowrt-devel mailing list > Cerowrt-devel@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/cerowrt-devel -- Dave T=C3=A4ht CTO, TekLibre, LLC http://www.teklibre.com Tel: 1-831-205-9740