From owner-freebsd-hackers Sat Sep 13 11:10:09 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id LAA17987 for hackers-outgoing; Sat, 13 Sep 1997 11:10:09 -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 LAA17977 for ; Sat, 13 Sep 1997 11:10:03 -0700 (PDT) Received: from localhost (stt@localhost) by pluto.cpe.ku.ac.th (8.8.5/8.8.5) with SMTP id BAA20320 for ; Sun, 14 Sep 1997 01:22:50 +0700 (ICT) Date: Sun, 14 Sep 1997 01:22:50 +0700 (ICT) From: Sunthiti Patchararungruang To: hackers@freebsd.org Subject: Need Help about BPF Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-hackers@freebsd.org X-Loop: FreeBSD.org Precedence: bulk Dear Sir, I am a master student. My thesis is in the topic of computer network. I need to know that if I has a complete IP packet, already encapsulated with IP header, and I would like to send it to a specified interface, how can I do that. However, my IP packet does not have any information about Datalink layer address. Do I need to manage the address by myself. Someone in FreeBsd.org told me that I should use BPF. I rarely have the document about it, only have BPF(4) man-page and BPF data in ftp.ee.lbl.gov. If you also recommend BPF, please tell me where I can find the information about it. Best Regards, Sunthiti Patchararungruang