From owner-freebsd-net@FreeBSD.ORG Wed Feb 8 13:44:34 2012 Return-Path: Delivered-To: freebsd-net@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id A78FB106566B for ; Wed, 8 Feb 2012 13:44:34 +0000 (UTC) (envelope-from prvs=1385245108=killing@multiplay.co.uk) Received: from mail1.multiplay.co.uk (mail1.multiplay.co.uk [85.236.96.23]) by mx1.freebsd.org (Postfix) with ESMTP id ED8868FC1A for ; Wed, 8 Feb 2012 13:44:33 +0000 (UTC) X-Spam-Processed: mail1.multiplay.co.uk, Wed, 08 Feb 2012 13:44:04 +0000 X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on mail1.multiplay.co.uk X-Spam-Level: X-Spam-Status: No, score=-5.0 required=6.0 tests=USER_IN_WHITELIST shortcircuit=ham autolearn=disabled version=3.2.5 Received: from r2d2 ([188.220.16.49]) by mail1.multiplay.co.uk (mail1.multiplay.co.uk [85.236.96.23]) (MDaemon PRO v10.0.4) with ESMTP id md50017942426.msg; Wed, 08 Feb 2012 13:44:03 +0000 X-MDRemoteIP: 188.220.16.49 X-Return-Path: prvs=1385245108=killing@multiplay.co.uk X-Envelope-From: killing@multiplay.co.uk Message-ID: From: "Steven Hartland" To: "Gleb Smirnoff" , References: <201202081300.q18D0Wnc067564@freefall.freebsd.org> Date: Wed, 8 Feb 2012 13:44:56 -0000 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="Windows-1252"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5931 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.6157 Cc: Subject: Re: kern/161899: Repeating RTM_MISS packets causing high CPU load for ntpd 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: Wed, 08 Feb 2012 13:44:34 -0000 ----- Original Message ----- From: "Gleb Smirnoff" > > Any update on this, would have been nice to see a fix hit before > > 9.0. If you need any more information please let me know. > > AFAIK, this is no longer a problem in 9.0-RELEASE or in HEAD. > > The cause for this number of misses is absense of a route for > IPv4 mapped block in IPv6 routing table. > > Here it is: > > # netstat -rn -f inet6 > Routing tables > > Internet6: > Destination Gateway Flags Netif Expire > ::/96 ::1 UGRS lo0 > > Some rc.d script installs this prefix in 9.0 and 10.0. If it hasn't > been merged to stable/8, then it needs to be found and merged. Thanks Gleb! Running the following commands does indeed stop this route add -inet6 ::ffff:0.0.0.0 -prefixlen 96 ::1 -reject route add -inet6 ::0.0.0.0 -prefixlen 96 ::1 -reject I found these in /etc/rc.d/network_ipv6 but I can't see why these wouldnt be run on a machine that doesn't have an IPv6 address, they seem to be added correctly on machines that do. So any pointers are to how to get this fix setup correctly in 8.2 would appreciated. Regards Steve ================================================ This e.mail is private and confidential between Multiplay (UK) Ltd. and the person or entity to whom it is addressed. In the event of misdirection, the recipient is prohibited from using, copying, printing or otherwise disseminating it or any information contained in it. In the event of misdirection, illegible or incomplete transmission please telephone +44 845 868 1337 or return the E.mail to postmaster@multiplay.co.uk.