From owner-freebsd-current Wed Mar 19 3: 8: 7 2003 Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 332B837B401 for ; Wed, 19 Mar 2003 03:08:05 -0800 (PST) Received: from mezzanine.vandalon.nl (cp25482-a.gelen1.lb.home.nl [217.120.68.13]) by mx1.FreeBSD.org (Postfix) with ESMTP id CC3E143F75 for ; Wed, 19 Mar 2003 03:08:03 -0800 (PST) (envelope-from wiebel@mezzanine.vandalon.nl) Received: by mezzanine.vandalon.nl (Postfix, from userid 1000) id 48ABA2A903; Wed, 19 Mar 2003 12:08:01 +0100 (CET) Date: Wed, 19 Mar 2003 12:08:01 +0100 From: Joris Vandalon To: Robert Garrett Cc: John Angelmo , current@freebsd.org Subject: Re: tcpdump delay? Message-ID: <20030319110801.GA97489@mezzanine.vandalon.nl> References: <3E784112.4000001@veidit.net> <20030319101554.GA553@sbcglobal.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20030319101554.GA553@sbcglobal.net> User-Agent: Mutt/1.4i Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Wed, Mar 19, 2003 at 04:15:54AM -0600, Robert Garrett wrote: > On Wed, Mar 19, 2003 at 11:06:10AM +0100, John Angelmo wrote: > > I needed to do some tcpdump from my box on the rl0 interface. The IP was > > changed to one that dosn't match our network and I noticed that > > everything had a 3 min delay(both traffic in and out from the > > interface), my current build is from yesterday and the box didn't have > > any heavy load. As soon as I changed back to my standard IP everything > > worked fine, but still a 3 min delay seems odd. > > > > /John > tcpdump -ln > > -l kills buffered output, i.e. waiting for a large amount of data before > it starts writing -l doesnt kill bufferd output, in contrary, it makes the output bufferd. -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''. The dely you are probably noticing is because of resolving problems , try -n Regards, Joris > > -n tells us not do lookup each ip.. > > should help > > rob > > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > > with "unsubscribe freebsd-current" in the body of the message > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-current" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message