From owner-freebsd-net@FreeBSD.ORG Tue Apr 1 15:14:08 2014 Return-Path: Delivered-To: net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 85A221EB for ; Tue, 1 Apr 2014 15:14:08 +0000 (UTC) Received: from smtp.rcn.com (smtp.rcn.com [69.168.97.78]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4A5D117C for ; Tue, 1 Apr 2014 15:14:07 +0000 (UTC) X_CMAE_Category: , , X-CNFS-Analysis: v=2.0 cv=NotTgrhJ c=1 sm=1 a=uNsD4W5u/UlQopoDAqU1YA==:17 a=fZBWQ0Qh6m4A:10 a=phkJtM7cgHoA:10 a=AaUjGI9IrlcA:10 a=IkcTkHD0fZMA:10 a=OA2lqS22AAAA:8 a=ApzlQX1J-xwAxxfRhQYA:9 a=QEXdDO2ut3YA:10 a=uNsD4W5u/UlQopoDAqU1YA==:117 X-CM-Score: 0 X-Scanned-by: Cloudmark Authority Engine X-Authed-Username: cm9iZXJ0aHVmZkByY24uY29t Authentication-Results: smtp01.rcn.cmh.synacor.com smtp.mail=roberthuff@rcn.com; spf=neutral; sender-id=neutral Authentication-Results: smtp01.rcn.cmh.synacor.com header.from=roberthuff@rcn.com; sender-id=neutral Authentication-Results: smtp01.rcn.cmh.synacor.com smtp.user=roberthuff; auth=pass (PLAIN) Received-SPF: neutral (smtp01.rcn.cmh.synacor.com: 209.6.39.223 is neither permitted nor denied by domain of rcn.com) Received: from [209.6.39.223] ([209.6.39.223:3257] helo=[10.0.0.3]) by smtp.rcn.com (envelope-from ) (ecelerity 3.5.1.37854 r(Momo-dev:3.5.1.0)) with ESMTPA id 72/18-15227-EB7DA335; Tue, 01 Apr 2014 11:14:06 -0400 Message-ID: <533AD7B3.8040208@rcn.com> Date: Tue, 01 Apr 2014 11:13:55 -0400 From: Robert Huff User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:24.0) Gecko/20100101 Thunderbird/24.4.0 MIME-Version: 1.0 To: net@freebsd.org Subject: Re: questions about (system) dhclient Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Cc: Rick Miller , Willy Offermans , Robert Huff X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.17 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 01 Apr 2014 15:14:08 -0000 Willy Offermans > Does em0 supports TSO? No: see "http://users.rcn.com/roberthuff/dhc_ifconfig". Or at least it's not enabled. > and do you have ipfw running at the same time? Yes ... but this setup has been running with the same ipfw rules for years. The only change is the version of the system. (Which _might_ make this a problem for current@, but I want to eliminate other possibilities first.) > I figured out via the help of freebsd friends that ipfw and TSO are > not compatible. Disabling TSO4 on bge0 solved the issue with > sendmail Um - what issue with sendmail? I did a packet-dump; greping for "dhcp" produces "http://users.rcn.com/roberthuff/tdump2.txt". (The full dump is 1.7 mbytes, and I don't have a place to make it public.) If there's something else I should be looking for, please let me know. Respectfully Robert Huff