From owner-freebsd-net@FreeBSD.ORG Fri Jan 2 23:27:12 2009 Return-Path: Delivered-To: net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 0489F1065674 for ; Fri, 2 Jan 2009 23:27:12 +0000 (UTC) (envelope-from yanefbsd@gmail.com) Received: from mxout3.cac.washington.edu (mxout3.cac.washington.edu [140.142.32.166]) by mx1.freebsd.org (Postfix) with ESMTP id CFFDA8FC18 for ; Fri, 2 Jan 2009 23:27:11 +0000 (UTC) (envelope-from yanefbsd@gmail.com) Received: from smtp.washington.edu (smtp.washington.edu [140.142.33.7] (may be forged)) by mxout3.cac.washington.edu (8.14.3+UW08.09/8.14.3+UW08.11) with ESMTP id n02NRBOq016515 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Fri, 2 Jan 2009 15:27:11 -0800 X-Auth-Received: from [192.168.10.3] (adsl-76-254-6-149.dsl.pltn13.sbcglobal.net [76.254.6.149]) (authenticated authid=youshi10) by smtp.washington.edu (8.14.3+UW08.09/8.14.3+UW08.11) with ESMTP id n02NR9sb024576 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=NOT); Fri, 2 Jan 2009 15:27:11 -0800 Message-Id: From: Garrett Cooper To: pyunyh@gmail.com In-Reply-To: <20081224021016.GF95088@cdnetworks.co.kr> Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (Apple Message framework v930.3) Date: Fri, 2 Jan 2009 15:31:33 -0800 References: <20081224021016.GF95088@cdnetworks.co.kr> X-Mailer: Apple Mail (2.930.3) X-PMX-Version: 5.5.0.356843, Antispam-Engine: 2.6.1.350677, Antispam-Data: 2009.1.2.231614 X-Uwash-Spam: Gauge=IIIIIII, Probability=8%, Report='FORGED_FROM_GMAIL 0.1, BODY_SIZE_1000_LESS 0, BODY_SIZE_5000_LESS 0, BODY_SIZE_600_699 0, __CT 0, __CTE 0, __CT_TEXT_PLAIN 0, __FRAUD_419_WEBMAIL 0, __FRAUD_419_WEBMAIL_FROM 0, __FROM_GMAIL 0, __HAS_MSGID 0, __HAS_X_MAILER 0, __MIME_TEXT_ONLY 0, __MIME_VERSION 0, __SANE_MSGID 0' Cc: net@freebsd.org Subject: Annoyance with msk(4) going up and down when initializing interface 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: Fri, 02 Jan 2009 23:27:12 -0000 Hi Pyun, I've noticed an issue for a while now with my chipset (I think that this is post an MFC between 7.0 and 7.1, but I could be wrong). Basically, each CPU (with the ULE scheduler) grabs the task to check for media status, goes out and attempts to get an IP, and if the timing of the status modifications is just right, one of the CPU's will mark the link up and others will mark it down, and it will stay down. Same thing occurs when trying to get a DHCP request -- there will typically be multiple requests and ACK's for any given requests. This occurs with my onboard NICs on my P5K-e motherboards on 7.1- rc[12], and also 8-CURRENT. Thanks! -Garrett