From owner-freebsd-net@FreeBSD.ORG Thu Oct 13 19:56:34 2005 Return-Path: X-Original-To: freebsd-net@freebsd.org Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 05F8316A41F for ; Thu, 13 Oct 2005 19:56:34 +0000 (GMT) (envelope-from gregorynou@altern.org) Received: from gtl.georgiatech-metz.fr (gtl.georgiatech-metz.fr [192.93.8.1]) by mx1.FreeBSD.org (Postfix) with ESMTP id 5328943D46 for ; Thu, 13 Oct 2005 19:56:32 +0000 (GMT) (envelope-from gregorynou@altern.org) Received: from vignes.georgiatech-metz.fr (vignes.georgiatech-metz.fr [192.93.8.34]) by gtl.georgiatech-metz.fr (8.11.7p1+Sun/8.9.0) with SMTP id j9DJuPU04739 for ; Thu, 13 Oct 2005 21:56:31 +0200 (MEST) X-Authentication-Warning: gtl.georgiatech-metz.fr: vignes.georgiatech-metz.fr [192.93.8.34] didn't use HELO protocol Message-ID: <434EBC0B.90409@altern.org> Date: Thu, 13 Oct 2005 21:56:59 +0200 From: Gregory Nou User-Agent: Mozilla Thunderbird 1.0.7 (X11/20051009) X-Accept-Language: en-us, en MIME-Version: 1.0 To: freebsd-net@freebsd.org Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: ping vs ping6 on localhost X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 13 Oct 2005 19:56:34 -0000 Hi, I was making some small tests on ipv6 (before bigger ones, of course :)), and got some astonishing results: when doing a ping6 -c 20 ::1 => --- ::1 ping6 statistics --- 20 packets transmitted, 20 packets received, 0.0% packet loss round-trip min/avg/max/std-dev = 0.100/0.265/1.655/0.367 ms I think the max and std-dev are not that relevant, because usually, the results were approx. 0.130 ms. when doing a ping -c 20 127.0.0.1 => --- 127.0.0.1 ping statistics --- 20 packets transmitted, 20 packets received, 0% packet loss round-trip min/avg/max/stddev = 0.050/0.070/0.089/0.008 ms I made the test at the same time (well, not really at the same time, but with only a few seconds of delay), and at different moment, with a load of 0.45 (which is not that much) I did not go further, because I'm quite new in the pratical use of ipv6, but this looks astonishing to me. Is this due to the IPv6 implementation, to ping6, or to my computer ? I'm sorry if this has already been discussed, I had not brave enough to look in all the archives of the mailing list. -- Gregory