From owner-freebsd-questions Sun Aug 31 06:20:32 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id GAA04371 for questions-outgoing; Sun, 31 Aug 1997 06:20:32 -0700 (PDT) Received: from pluto.cpe.ku.ac.th (pluto.cpe.ku.ac.th [158.108.32.69]) by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id GAA04361 for ; Sun, 31 Aug 1997 06:20:06 -0700 (PDT) Received: from pluto.cpe.ku.ac.th (leon.cpe.ku.ac.th [158.108.32.72]) by pluto.cpe.ku.ac.th (8.8.5/8.8.5) with SMTP id UAA02994 for ; Sun, 31 Aug 1997 20:29:45 +0700 (ICT) Date: Sun, 31 Aug 1997 20:17:46 0700 From: Sunthiti Patchararungruang X-Mailer: The Bat! (v1.00.90 Beta) UNREG Reply-To: Sunthiti Patchararungruang Organization: Plutoware Organization Priority: Normal Message-ID: 1845.97 831@plutoware.org To: freebsd-questions@FreeBSD.org Subject: Where can I find the information about BPF Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-questions@FreeBSD.org X-Loop: FreeBSD.org Precedence: bulk Dear Sir, I am a master student of Asian Institute of Technology. I do my thesis on a FreeBSD system. My thesis is in the topic of computer network. I need to access the BPF device. I have found that the information about it is very rarely available. I can found a paper about BPF implementation in "ftp://ftp.ee.lbl.gov" and a demo-program, tcpdump, which is implement the BPF only in reading from it. However, I need to write a complete IP packets-already have headers and options- to a specified network interface without minding about the interface topology. Someone in FreeBSD.org advised me to use the BPF. Therefore, I need to know where I can get the information about it. I can accept all source of information including text books. Thank you for reading my mail. I am looking forward to hearing from you soon. Best regards, Sunthiti mailto:stt@pluto.cpe.ku.ac.th