From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?ISO-8859-1?Q?N=E9meth_M=E1rton?= Subject: Re: [Bugme-new] [Bug 14794] New: IP address assigned by DHCP is dropped after ~40 seconds Date: Thu, 17 Dec 2009 21:53:20 +0100 Message-ID: <4B2A9A40.90203@freemail.hu> References: <20091216154713.f082e7cf.akpm@linux-foundation.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: netdev@vger.kernel.org, bugzilla-daemon@bugzilla.kernel.org, bugme-daemon@bugzilla.kernel.org To: Andrew Morton , Mike Galbraith , Peter Zijlstra , Ingo Molnar Return-path: Received: from mail02d.mail.t-online.hu ([84.2.42.7]:53837 "EHLO mail02d.mail.t-online.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759982AbZLQVDv (ORCPT ); Thu, 17 Dec 2009 16:03:51 -0500 In-Reply-To: <20091216154713.f082e7cf.akpm@linux-foundation.org> Sender: netdev-owner@vger.kernel.org List-ID: Hi, I bisected the problem, see http://bugzilla.kernel.org/show_bug.cgi?id=3D= 14794 for details. Any idea what is the relation between this problem and the= found patch? Regards, M=E1rton N=E9meth Andrew Morton wrote: > (switched to email. Please respond via emailed reply-to-all, not via= the > bugzilla web interface). >=20 > A 2.6.31 -> 2.6.32 regression. >=20 > On Sun, 13 Dec 2009 08:59:48 GMT > bugzilla-daemon@bugzilla.kernel.org wrote: >=20 >> http://bugzilla.kernel.org/show_bug.cgi?id=3D14794 >> >> Summary: IP address assigned by DHCP is dropped after ~40 >> seconds >> Product: Networking >> Version: 2.5 >> Kernel Version: 2.6.32 >> Platform: All >> OS/Version: Linux >> Tree: Mainline >> Status: NEW >> Severity: normal >> Priority: P1 >> Component: IPV4 >> AssignedTo: shemminger@linux-foundation.org >> ReportedBy: nm127@freemail.hu >> Regression: Yes >> >> >> Created an attachment (id=3D24165) >> --> (http://bugzilla.kernel.org/attachment.cgi?id=3D24165) >> Wireshark log while acquiring IP address >> >> The IP address which was assigned by DHCP is dropped and the address >> 169.254.123.251 is set. This happens on Clevo D4J model D410J with 2= =2E6.32, but >> works correctly with 2.6.31. >> >> Steps to reproduce: >> 1. Boot the system >> 2. In an xterm window execute the following command to see the actua= l IP >> address settings: >> while true; do clear; date; /sbin/ifconfig; sleep 1; done >> 3. Unplug the network cable for some seconds: the IP address should = be gone >> 4. Plug the network cable. >> 5. After about 10 seconds the IP address 192.168.1.64 assigned by DH= CP is >> visible >> 6. After about 50 seconds (counting from the plug of the network cab= le) no IP >> address is assigned >> 7. After about 65 seconds (counting from the plug of the network cab= le) the IP >> address 169.254.123.251 is assigned. This IP address will not work o= n this >> network. >> >> I run Wireshark during the whole process, see the attached log file. >> Packet 25..28: DHCP address is fetched. >> Packet 63: DHCP release: this should not happen