From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ot1-x32d.google.com (mail-ot1-x32d.google.com [IPv6:2607:f8b0:4864:20::32d]) (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 D6A9F3CB38 for ; Mon, 17 Aug 2020 23:44:29 -0400 (EDT) Received: by mail-ot1-x32d.google.com with SMTP id q9so15197325oth.5 for ; Mon, 17 Aug 2020 20:44:29 -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; bh=xHLmNg9/UJnqeiGki5jmofTG4BNPYxE4QTt8jK/EehE=; b=KkuKCBRamvfrg4Svogf1kQ7ockeHX73byGYA3wELnVsZ5o9yzibwNp04N4blJ703qp TQ+EMbFcVgDFdNko9Y6cCt5dFKuaXAUfxwwpxQhU5PckFK6UpdtalFO+G/KobC7VNijb j/C9aTUZWsoMGEnDYCF3XblMWL2Xe/mpNkwuVxOwL8ClRtVzeoWt85ZpeWP0JTmFzTF5 vOzos+aV3NFdgTBylEgFkFxsh/b3k4mnpMpiTrScQYu2IlsnZiThZkjKw5FMqUcTB5R3 A1py24gFmBocKRkiY81M+ofkTJg4M7jMoeM/vS29ukI7HZhM+6t3pdptyfj/w0JReC6r INGw== 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; bh=xHLmNg9/UJnqeiGki5jmofTG4BNPYxE4QTt8jK/EehE=; b=S6by/9wurp46cbbX361Q4dwlUCMqWcU6iSQFUgPqWCV/nSONnbly7AOagqrxTNEV8m DVsqveaNAmvyVCUKIIxYqO7NqUXI9T6cLgNKkLs3Iv7DzMDiYOK/1mYZympwY76JJlbU VDST8QZz4CrDis6eCw2WGZTOvJUGWvtI/FU7hgD948pzdTRVH6tosDn86Ryf24wf6DT+ o6L3B9s//D7xBBjscTUK3jyJ67dc+CYFQ4hAFyCGdqN1suIsNIZzUmNaqX3IhrM56kcZ WJY2+66y71uWGk/pDT7pQBgx58YUG7XZntkWS5CQbQs2TsDW/AdEZYqTGeDCQONdd7w+ 4UwA== X-Gm-Message-State: AOAM533ybGtjjyCbAgWY9/dJQ//PKiD9Z7nIoh1vczaZZEGmaCGXOaqn lBpdBMj2/oo7tRhvkFfwQXZMW0ZfLk/Jy1VczDD1yp1B4vJReg== X-Google-Smtp-Source: ABdhPJwP5GjCqPy1JUGyl8aN6CeoBSqLD4a/U5du+htay91A9aR+o5dE/cBck9VoxTob1NpexRgs12FaiHm9Ry/vpOw= X-Received: by 2002:a9d:7f0b:: with SMTP id j11mr13039728otq.291.1597722268833; Mon, 17 Aug 2020 20:44:28 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Daniel Sterling Date: Mon, 17 Aug 2020 23:44:17 -0400 Message-ID: To: Kenneth Porter Cc: bloat Content-Type: text/plain; charset="UTF-8" Subject: Re: [Bloat] cake + ipv6 X-BeenThere: bloat@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: General list for discussing Bufferbloat List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 18 Aug 2020 03:44:30 -0000 This is a very good question, I will stare at "iftop" (and check the xbox's network settings, if I can), the next time I notice it's updating. The report from my "users" :) was that pausing xbox updates solved their video streaming issues -- but, it may be that there was other network traffic or that multiple systems were doing updates, and the update they paused gave back enough bandwidth for their streams. I will look at traffic summore and let you know if I was mistaken about the xbox. It is now using ipv6 for at least some updates, I do know that much for certain, but hopefully I'm wrong about it using too many v6 addresses. Jonathan, thanks for the tips re: using ports or remote addresses -- Hmm, I don't know -- is it possible to identify (and thus classify) plain old bulk downloads, as separate from video streams? They're both going to use http / https (or possibly QUIC) -- and they're both likely to come from CDN networks... I can't think of a simple way to tell them apart. Is this enough of a problem that people would try to make a list of netblocks / prefixes that belong to video vs other CDN content? I do notice video streams are much more bursty than plain downloads for me, but that may not hold for all users. That is, for me at least, a video stream may average 5mbps over, say, 1 minute, but it will sit at 0mbps for a while and then burst at 20mbps for a bit. I can't think of a way to mark such traffic though. Is there a place where such complex, custom rules for marking packets would sit? Perhaps a userspace daemon that looks at traffic with pcap? Thanks, Dan On Mon, Aug 17, 2020 at 10:55 PM Kenneth Porter wrote: > > --On Monday, August 17, 2020 10:52 PM -0400 Daniel Sterling > wrote: > > > As I'm sure you know ipv6 addresses are essentially random on the > > internal LAN as compared to v4 -- a box can grab as many v6 addresses > > as it wants, and I don't believe my linux router can really know which > > box is using which address, can it? > > Is this the usual IPv6 allocation by autoconfig or is the Xbox grabbing > extra addresses deliberately to break flow isolation? It should only > advertise one public address for its updates. > > _______________________________________________ > Bloat mailing list > Bloat@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/bloat