Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756044AbYGCTH2 (ORCPT ); Thu, 3 Jul 2008 15:07:28 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752673AbYGCTHQ (ORCPT ); Thu, 3 Jul 2008 15:07:16 -0400 Received: from sovereign.computergmbh.de ([85.214.69.204]:33158 "EHLO sovereign.computergmbh.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752145AbYGCTHP (ORCPT ); Thu, 3 Jul 2008 15:07:15 -0400 Date: Thu, 3 Jul 2008 21:07:13 +0200 (CEST) From: Jan Engelhardt To: "H. Peter Anvin" cc: Jens-Michael Hoffmann , linux-kernel@vger.kernel.org Subject: Re: tcp/ip connect on demand In-Reply-To: <486D1A66.6010006@zytor.com> Message-ID: References: <486D1A66.6010006@zytor.com> User-Agent: Alpine 1.10 (LNX 962 2008-03-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1010 Lines: 26 On Thursday 2008-07-03 20:28, H. Peter Anvin wrote: > Jens-Michael Hoffmann wrote: >> hi, >> >> what is the right way to implement a "connect on demand" feature? >> Example: user types url in firefox and presses return. Then >> the system should set up network devices and proceed as usual. >> >> Is there a hook in the kernel we can use? > > In the kernel, no. Nor do you need one; the best place to hook into this is > probably the name service system (so you catch it on trying to look up > hostnames.) > > Alternatively, you can set up a bridge device which you can listen to via a tap > device; when you see traffic, you bring up the real network and attach it to > the bridge. There is on-demand for PPP devices; though that is probably specific to PPP. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/