From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753272Ab1G0GP5 (ORCPT ); Wed, 27 Jul 2011 02:15:57 -0400 Received: from outmail149120.authsmtp.net ([62.13.149.120]:61864 "EHLO outmail149120.authsmtp.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751210Ab1G0GPz (ORCPT ); Wed, 27 Jul 2011 02:15:55 -0400 X-Greylist: delayed 3698 seconds by postgrey-1.27 at vger.kernel.org; Wed, 27 Jul 2011 02:15:54 EDT From: Ben Pfaff To: Alan Ott Cc: linux-kernel@vger.kernel.org, linux-net@vger.kernel.org Subject: Re: IP over 802.2 with LLC/SNAP References: <4E2F8B7B.80906@signal11.us> Reply-To: Ben Pfaff Date: Tue, 26 Jul 2011 22:13:01 -0700 In-Reply-To: <4E2F8B7B.80906@signal11.us> (Alan Ott's message of "Tue, 26 Jul 2011 23:52:27 -0400") Message-ID: <87wrf4ux0i.fsf@blp.benpfaff.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Server-Quench: 43a91605-b80f-11e0-97bb-002264978518 X-AuthReport-Spam: If SPAM / abuse - report it at: http://www.authsmtp.com/abuse X-AuthRoute: OCdwYQ8QAVZfSBwy AThCFzNJTwsiPBEK DBMeOw5HJEYITQBc ch0bOAAMd38BQRYD A2cKS1RSWlx1U2J3 JQ1XcwRZfE5GQQdq UldLR1BXCwQmQRpj A2tvUktycgVHe38+ Y0RiVj5fXxVzdEB9 R1MGHW1QeGZhPWAC WUcKJR5UcAFIeBtM bVh6VXtDAzANdgMA VwgtMip5bW0Fbn4d XQARLRo2ZW1MJRgV f3g+ X-Authentic-SMTP: 61633331373532.1014:706 X-AuthFastPath: 0 (Was 255) X-AuthVirus-Status: No virus detected - but ensure you scan with your own anti-virus system. Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org [I'm not sure that linux-net is an active list, are you looking for netdev@vger.kernel.org?] Alan Ott writes: > So the question is, does Linux support IP over 802.2 with > LLC/SNAP? No, I don't think that it does. I tested this perhaps a year ago, out of curiosity as much as anything else, and could not find a way to make it work. > Is there a sysfs/proc entry that I have to turn on to make this > work (I didn't find one)? I did not find one at the time. I did find that one router on my company's network (I think it was a Cisco) transformed the 802.2 LLC/SNAP headers into Ethernet II headers as packets passed through it, which effectively acted as a gateway to allow Linux to talk IP over 802.2 LLC/SNAP. But I don't think that it translated in the other direction. -- Ben Pfaff http://benpfaff.org