Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 25 Jul 2002 17:23:25 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 25 Jul 2002 17:23:25 -0400 Received: from pcow034o.blueyonder.co.uk ([195.188.53.122]:14605 "EHLO blueyonder.co.uk") by vger.kernel.org with ESMTP id ; Thu, 25 Jul 2002 17:23:25 -0400 Date: Thu, 25 Jul 2002 22:34:11 +0100 From: Bruce Cran To: linux-kernel@vger.kernel.org Subject: wrong mtu value in /proc/net/route Message-ID: <20020725223410.A18965@steely.transient> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline User-Agent: Mutt/1.2.5.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 835 Lines: 18 I've found something strange going on in 2.4 kernels - when I run 'netstat -r' I get the routing table from /proc/net/route. The MSS value reported is only 40 bytes, and when I run 'cat /proc/net/route I'm told that the _MTU_ is 40 bytes. I thought the MSS was supposed to be the MTU - 40 bytes, not 40 bytes in total, where the MTU for ethernet is 1500. If I run ifconfig, it reports the correct MTU of 1500 for eth0 and 16463 for lo. This computer has a NetGear FA311 card, and is running 2.4.19-pre7-ac2, though I've also seen this happening on a 2.4.18 kernel. -- Bruce Cran - 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/