From owner-freebsd-questions@FreeBSD.ORG Thu Jul 17 10:50:13 2003 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 6C57337B401 for ; Thu, 17 Jul 2003 10:50:13 -0700 (PDT) Received: from dan.emsphone.com (dan.emsphone.com [199.67.51.101]) by mx1.FreeBSD.org (Postfix) with ESMTP id E449B43FAF for ; Thu, 17 Jul 2003 10:50:10 -0700 (PDT) (envelope-from dan@dan.emsphone.com) Received: (from dan@localhost) by dan.emsphone.com (8.12.9/8.12.9) id h6HHmmtA027787; Thu, 17 Jul 2003 12:48:48 -0500 (CDT) (envelope-from dan) Date: Thu, 17 Jul 2003 12:48:48 -0500 From: Dan Nelson To: Val Smith Message-ID: <20030717174847.GB61660@dan.emsphone.com> References: <20030717130815.58934a3a.vmsmith@grokking.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20030717130815.58934a3a.vmsmith@grokking.org> X-OS: FreeBSD 5.1-CURRENT X-message-flag: Outlook Error User-Agent: Mutt/1.5.4i cc: freebsd-questions@freebsd.org Subject: Re: PMTU discovery? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 17 Jul 2003 17:50:13 -0000 In the last episode (Jul 17), Val Smith said: > Hi, > > I have a quick question and hope it isn't too > newb :) > > Does FBSD support PMTU discovery on ethernet > interfaces and, if so, how is it enabled? I've > looked in the man pages for both ifconfig and xl > but could only seem to find reference to manually > setting MTU, not autodiscovery. I know how to set > this with windows registry but want it for a FBSD > 5.1 workstation as well. sysctl net.inet.tcp.path_mtu_discovery It defaults to 1 (enabled). -- Dan Nelson dnelson@allantgroup.com