From owner-freebsd-net@FreeBSD.ORG Sat Oct 22 00:53:02 2011 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 3EB301065679 for ; Sat, 22 Oct 2011 00:53:02 +0000 (UTC) (envelope-from mike@sentex.net) Received: from smarthost1.sentex.ca (smarthost1-6.sentex.ca [IPv6:2607:f3e0:0:1::12]) by mx1.freebsd.org (Postfix) with ESMTP id F34668FC08 for ; Sat, 22 Oct 2011 00:53:01 +0000 (UTC) Received: from [IPv6:2607:f3e0:0:4:f025:8813:7603:7e4a] (saphire3.sentex.ca [IPv6:2607:f3e0:0:4:f025:8813:7603:7e4a]) by smarthost1.sentex.ca (8.14.5/8.14.4) with ESMTP id p9M0r0im062474; Fri, 21 Oct 2011 20:53:00 -0400 (EDT) (envelope-from mike@sentex.net) Message-ID: <4EA213E3.4040406@sentex.net> Date: Fri, 21 Oct 2011 20:52:51 -0400 From: Mike Tancsa Organization: Sentex Communications User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.13) Gecko/20101207 Thunderbird/3.1.7 MIME-Version: 1.0 To: Steven Hartland References: <02FFC9CF360C4E2F81B00B653DE1584E@multiplay.co.uk> , <78997A42-95E7-4DF4-890C-BBDFE1CE4B03@bluecoat.com> <4D86495397B9404D80C693302B6438F6@multiplay.co.uk> In-Reply-To: <4D86495397B9404D80C693302B6438F6@multiplay.co.uk> X-Enigmail-Version: 1.1.1 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.71 on IPv6:2607:f3e0:0:1::12 Cc: freebsd-net@freebsd.org Subject: Re: very strange arp problem after ip move - icmp works udp doesn't 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: Sat, 22 Oct 2011 00:53:02 -0000 On 10/21/2011 8:41 PM, Steven Hartland wrote: > > Seems like the flow table is pretty broken then with respect > changing arp entries, at least in 8.2-RELEASE :( Its been removed from the default kernel back in April Author: bz Date: Sat Apr 9 12:04:35 2011 New Revision: 220486 URL: http://svn.freebsd.org/changeset/base/220486 Log: MFC r219775: For now remove options FLOWTABLE from the remaining GENERIC kernel configurations and make it opt-in for those who want it. LINT will still build it. While it may be a perfect win in some scenarios, it still troubles users (see PRs) in general cases. In addition we are still allocating resources even if disabled by sysctl and still leak arp/nd6 entries in case of interface destruction. Discussed with: qingli (2010-11-24, just never executed) Discussed with: juli (OCTEON1) PR: kern/148018, kern/155604, kern/144917, kern/146792 ---Mike -- ------------------- Mike Tancsa, tel +1 519 651 3400 Sentex Communications, mike@sentex.net Providing Internet services since 1994 www.sentex.net Cambridge, Ontario Canada http://www.tancsa.com/