From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sun, 28 Jan 2001 21:45:20 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sun, 28 Jan 2001 21:45:11 -0500 Received: from saturn.cs.uml.edu ([129.63.8.2]:23561 "EHLO saturn.cs.uml.edu") by vger.kernel.org with ESMTP id ; Sun, 28 Jan 2001 21:45:04 -0500 From: "Albert D. Cahalan" Message-Id: <200101290245.f0T2j2Y438757@saturn.cs.uml.edu> Subject: Re: [PATCH] dynamic IP support for 2.4.0 (SIOCKILLADDR) To: vii@altern.org (John Fremlin) Date: Sun, 28 Jan 2001 21:45:02 -0500 (EST) Cc: linux-kernel@vger.kernel.org, netdev@oss.sgi.com, paulus@linuxcare.com, linux-ppp@vger.kernel.org, linux-net@vger.kernel.org In-Reply-To: from "John Fremlin" at Jan 27, 2001 10:54:51 PM X-Mailer: ELM [version 2.5 PL2] MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org John Fremlin writes: > When the IP address of an interface changes, TCP connections with the > old source address are useless. Applications are not notified of this > and time out ordinarily, just as if nothing had happened. This is > behaviour isn't very helpful when you have a dynamic IP and know > you're probably not going to get the old one back. In that case, you ... > I patched userspace ppp-2.4.0 to use this functionality. It would be > better if SIOCKILLADDR were not used until we are sure that the new IP > is in fact different from the old one, but pppd in demand mode would I get the same IP about 2/3 of the time, so it is pretty important to avoid killing connections until after the new IP is known. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/