From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265230AbUGOKjz (ORCPT ); Thu, 15 Jul 2004 06:39:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265542AbUGOKjz (ORCPT ); Thu, 15 Jul 2004 06:39:55 -0400 Received: from mail-relay-2.tiscali.it ([213.205.33.42]:61152 "EHLO mail-relay-2.tiscali.it") by vger.kernel.org with ESMTP id S265230AbUGOKjy (ORCPT ); Thu, 15 Jul 2004 06:39:54 -0400 Message-ID: <40F66021.6000804@tiscali.it> Date: Thu, 15 Jul 2004 12:44:49 +0200 From: pietro canevarolo User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8a2) Gecko/20040703 X-Accept-Language: en-us, en MIME-Version: 1.0 To: linux-kernel@vger.kernel.org Subject: cannot ping from a usb-serial device References: <20040714000810.GA7308@fs.tum.de> <20040714090159.GA3821@pclin040.win.tue.nl> <20040715025948.GA19092@fs.tum.de> In-Reply-To: <20040715025948.GA19092@fs.tum.de> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi all, I am developing a portable device that I must connect to Internet via usb. I connect to my linux box with pppd on ttyUSB0 and the link layer is working ok. I can ping my device from all the machines connected, but when the device pings some address known reacheable my linux box sees the packets ("ifconfig ppp0" returns the correct number of packets exchanged and "netstat -i" reports the correct number of bytes on the interface), but no echo replies come back to my device. I understand that my question may be silly for this forum, but I am really out of resources. Can someone out there point me to some info to understand why this is happening? many tnx pietro canevarolo