From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-vc0-f171.google.com (mail-vc0-f171.google.com [209.85.220.171]) (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 DB0D621F17D for ; Wed, 12 Dec 2012 02:11:08 -0800 (PST) Received: by mail-vc0-f171.google.com with SMTP id n11so547748vch.16 for ; Wed, 12 Dec 2012 02:11:07 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; bh=HLTfxjiqUSXGv5RstVedgexn2y46/U2A3XE8myWkqsM=; b=YLd2aMj4i5hCIt4pjqDxmvL/CB0w6dOuTeqERUNOv8d2M/vphcH9+CAzZaqlpl5yIx SoBM6y4QZN10eAHsbP4wAzWjo/9ngkQEQU/GSTKbiJqbn+Rr//hDDssUTHJMDEefmr6h 3R5tf+lw19svhOM6UGDGGsrCgRwTXZ82FcJqKutxyo7ZQSrzJmMm3Qf+vb3sttQai8uY dc3dl3AJXBY45/aAqPwKYdmFrsDVa5hOI87CjO6LpJRnSu5P5QcfZ9N2rCvBMUDA0i/m r+E4+6Uo+4Wj92qiU+/wDIhBy5d/5baApfNaNJs82xHVmt4RTvaQZ54/qJwldRcAhofL /Csw== MIME-Version: 1.0 Received: by 10.52.23.20 with SMTP id i20mr194481vdf.42.1355307067605; Wed, 12 Dec 2012 02:11:07 -0800 (PST) Received: by 10.58.254.201 with HTTP; Wed, 12 Dec 2012 02:11:07 -0800 (PST) In-Reply-To: <50C852C0.1060100@openwrt.org> References: <8F973FF7-B39D-4E21-B889-14F6105A29F4@employees.org> <50C84C38.7040207@openwrt.org> <7E37A46B-7F40-40D1-9A59-B176F5219DB4@employees.org> <50C852C0.1060100@openwrt.org> Date: Wed, 12 Dec 2012 11:11:07 +0100 Message-ID: From: Dave Taht To: Steven Barth Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Cc: "cerowrt-devel@lists.bufferbloat.net" Subject: Re: [Cerowrt-devel] Current state of ipv6 in openwrt barrier breaker X-BeenThere: cerowrt-devel@lists.bufferbloat.net X-Mailman-Version: 2.1.13 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: Wed, 12 Dec 2012 10:11:09 -0000 On Wed, Dec 12, 2012 at 10:47 AM, Steven Barth wrote: > Hi Ole, > >> you could use hierarchical PD, just that it doesn't work well with: >> - networks with loops >> - multi-homed networks >> >> and it is quite wasteful with regards to subnet space. >> ND proxy fails in any topology with a loop. > > Yes but I expect loops not to happen in practice or people that build loo= ps > to know how to take care of them. I expect loops to happen a lot in practice, and people to not be able to take care of them. Babel, however, is loop free. http://www.pps.univ-paris-diderot.fr/~jch/software/babel/ > > Nevertheless taking into account the issues I mention below hierarchical = PD > still sounds to me like a better thing in SOHO environments regarding > interoperability with other devices in that environment however as I stil= l > need the NDP-Proxying fallback in case the upstream router (be it a > SOHO-router) doesn't support further distribution of the ISP-Prefix. > > > >> we do have an implementation on github that implements >> http://datatracker.ietf.org/doc/draft-arkko-homenet-prefix-assignment/ >> that supports prefix assignment with an arbitrary topology in the networ= k. >> why not use that? I would like to implement portions of that algorithm in something far more lightweight than OSPF. Extending AHCP is my current first choice. > From a technical point of view I like your approach and using OSPF. > > However the stuff is >1 MB in size including all of its dependencies and > includes some strange dependencies like libreadline?, some otherwise > unrelated Lua extensions and so on. > > Sorry, that is not an option for the majority of OpenWrt users, just for > having a more versatile Prefix Delegation feature which will only be (?) > interoperable with a small amount of routers. > > We could integrate it for more powerful routers though (and I wouldn't > object) but I don't see any hope to get it to mainstream before we can ge= t > it down to a few 100 KB (including dependencies). > Also at least I don't have any time or resources to take care of either o= f > that in the near future. Neither do I. > --=20 Dave T=E4ht Fixing bufferbloat with cerowrt: http://www.teklibre.com/cerowrt/subscribe.= html