From owner-freebsd-stable@FreeBSD.ORG Thu Sep 18 19:18:23 2008 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id DD8821065674 for ; Thu, 18 Sep 2008 19:18:23 +0000 (UTC) (envelope-from jdc@koitsu.dyndns.org) Received: from QMTA06.emeryville.ca.mail.comcast.net (qmta06.emeryville.ca.mail.comcast.net [76.96.30.56]) by mx1.freebsd.org (Postfix) with ESMTP id C1FEC8FC15 for ; Thu, 18 Sep 2008 19:18:23 +0000 (UTC) (envelope-from jdc@koitsu.dyndns.org) Received: from OMTA07.emeryville.ca.mail.comcast.net ([76.96.30.59]) by QMTA06.emeryville.ca.mail.comcast.net with comcast id GGSF1a00S1GXsucA6KJPjh; Thu, 18 Sep 2008 19:18:23 +0000 Received: from koitsu.dyndns.org ([67.180.253.227]) by OMTA07.emeryville.ca.mail.comcast.net with comcast id GKJN1a00P4v8bD78TKJNss; Thu, 18 Sep 2008 19:18:23 +0000 X-Authority-Analysis: v=1.0 c=1 a=qgHwid8nRcoA:10 a=d1uKaSVsuw0A:10 a=QycZ5dHgAAAA:8 a=EVwO9xaTLD595zGxtV8A:9 a=qB5eZawVRMT8eBKopec4LNR32ZUA:4 a=EoioJ0NPDVgA:10 a=LY0hPdMaydYA:10 Received: by icarus.home.lan (Postfix, from userid 1000) id 4C4A517B81A; Thu, 18 Sep 2008 12:18:22 -0700 (PDT) Date: Thu, 18 Sep 2008 12:18:22 -0700 From: Jeremy Chadwick To: "Oleg V. Nauman" Message-ID: <20080918191822.GA25698@icarus.home.lan> References: <20080918180543.pt7s2zmaio48ww8g@webmail.opentransfer.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20080918180543.pt7s2zmaio48ww8g@webmail.opentransfer.com> User-Agent: Mutt/1.5.18 (2008-05-17) Cc: freebsd-stable@freebsd.org Subject: Re: RELENG_7: something is very wrong with UDP? X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 18 Sep 2008 19:18:24 -0000 On Thu, Sep 18, 2008 at 06:05:43PM +0300, Oleg V. Nauman wrote: > c) traceroute prints 0.00 like response time for every host Interesting, since traceroute bases the RTT on the amount of time it takes between the initial packet sent (see below) and the time it receives the ICMP port unreachable response. Yes, I am fully aware traceroute uses UDP as the default protocol to induce said ICMP. That said, does the erroneous behaviour go away when using -P tcp? -- | Jeremy Chadwick jdc at parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB |