From owner-freebsd-net@FreeBSD.ORG Fri May 13 00:30:49 2005 Return-Path: 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 5D02416A4CE for ; Fri, 13 May 2005 00:30:49 +0000 (GMT) Received: from relay.pair.com (relay00.pair.com [209.68.1.20]) by mx1.FreeBSD.org (Postfix) with SMTP id 9F61E43D73 for ; Fri, 13 May 2005 00:30:48 +0000 (GMT) (envelope-from silby@silby.com) Received: (qmail 45755 invoked from network); 13 May 2005 00:30:47 -0000 Received: from unknown (HELO localhost) (unknown) by unknown with SMTP; 13 May 2005 00:30:47 -0000 X-pair-Authenticated: 209.68.2.70 Date: Thu, 12 May 2005 19:30:32 -0500 (CDT) From: Mike Silbersack To: Matt Ruzicka In-Reply-To: Message-ID: <20050512192936.V730@odysseus.silby.com> References: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed cc: freebsd-net@freebsd.org Subject: Re: Outbound TCP issue, potentially related to'FreeBSD-SA-05:08.kmem [REVISED]' X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.1 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, 13 May 2005 00:30:49 -0000 On Thu, 12 May 2005, Matt Ruzicka wrote: > A couple days after we patched our systems, we started to receive a number > of reports of mysql connection errors when our patched FreeBSD 4.9 web > servers were trying to connect to our mysql server, which lives on a > separate FreeBSD machine. Although you just saw this behavior now, it sounds like you're describing a problem that sometimes occurs due to port randomization. Can you try setting sysctl net.inet.ip.portrange.randomized=0 to see if that affects anything? Mike "Silby" Silbersack