From owner-freebsd-net Wed Nov 15 17:33:46 2000 Delivered-To: freebsd-net@freebsd.org Received: from outblaze12.outblaze.com (outblaze12.outblaze.com [209.249.164.196]) by hub.freebsd.org (Postfix) with SMTP id EC27437B4D7 for ; Wed, 15 Nov 2000 17:33:43 -0800 (PST) Received: (qmail 10117 invoked by uid 1001); 16 Nov 2000 01:33:43 -0000 Message-ID: <20001116013343.10116.qmail@bsdmail.org> Content-Type: text/plain; charset="iso-8859-1" Content-Disposition: inline Content-Transfer-Encoding: 7bit Mime-Version: 1.0 X-Mailer: MIME-tools 4.104 (Entity 4.117) From: "Tan Wei Chong" To: freebsd-net@FreeBSD.org Date: Thu, 16 Nov 2000 09:33:43 +0800 Subject: tcpdump newbie Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org hi, can anybody help me to clarify which host/port/interface i should capture if i were to do performance compare between a tunnel 6to4/4to6 (IPv6 tunnel into IPv4 and IPv4 tunnel into IPv6) HTTP/1.1 traffic. Should I issue: tcpdump -i fxp0 tcpdump -i gif0 (i use gifconfig for the tunneling) tcpdump host and tcpdump host and tcpdump src port ??? because so far all the tunnel communication that I try to capture seems to yield empty packets when analyze using tcptrace, however pure IPv6 to IPv6 or IPv4 to IPv4 communication does give result. Note: the 2 host is link-local and isolated from any other computer Thank you. Wei Chong -- Get your free email from http://www.bsdmail.org

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