From owner-freebsd-stable Mon May 14 22: 5:16 2001 Delivered-To: freebsd-stable@freebsd.org Received: from zoon.lafn.org (zoon.lafn.org [206.117.18.9]) by hub.freebsd.org (Postfix) with ESMTP id 2371B37B422 for ; Mon, 14 May 2001 22:05:14 -0700 (PDT) (envelope-from bc979@lafn.org) Received: from [10.0.1.100] (cs-wla1-p41.lafn.org [192.168.20.41] (may be forged)) by zoon.lafn.org (8.10.1/8.10.1) with ESMTP id f4F54Fv35988; Mon, 14 May 2001 22:04:15 -0700 (PDT) Mime-Version: 1.0 X-Sender: bc979@mail.lafn.org Message-Id: In-Reply-To: <200105150442.f4F4gLw07243@cwsys.cwsent.com> References: <200105150442.f4F4gLw07243@cwsys.cwsent.com> Date: Mon, 14 May 2001 22:02:44 -0700 To: Cy Schubert - ITSD Open Systems Group From: Doug Hardie Subject: Re: tcpdump problem with 4.3-Release Cc: stable@FreeBSD.ORG Content-Type: text/plain; charset="us-ascii" ; format="flowed" Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Thats the mode it seems to be in without that argument. Packets go through the system for some time, then you get a bunch listed. It used to output a line when the packet occurred. At 21:42 -0700 5/14/01, Cy Schubert - ITSD Open Systems Group wrote: >In message , Doug Hardie writes: >> Is there a problem with tcpdump on 4.3-Release? On a system with >> very low packet rates, tcpdump never displays any packets. Its as if >> its in buffered mode. Eventually it will show traffic, but it >> appears that some of the packets are not actually displayed. On a >> system with lots of traffic, you see packets much faster, but they >> still look a bit sparce. ntop never sees anything on the low traffic >> system. > > -l Make stdout line buffered. Useful if you want to > see the data while capturing it. E.g., > ``tcpdump -l | tee dat'' or ``tcpdump -l > > dat & tail -f dat''. > > > >Regards, Phone: (250)387-8437 >Cy Schubert Fax: (250)387-5766 >Team Leader, Sun/Alpha Team Internet: Cy.Schubert@osg.gov.bc.ca >Open Systems Group, ITSD, ISTA >Province of BC -- -- Doug To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message