From owner-freebsd-net@FreeBSD.ORG Thu Jul 17 13:25:20 2003 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 0433837B401 for ; Thu, 17 Jul 2003 13:25:20 -0700 (PDT) Received: from mx1.evo6.net (mx1.evo6.net [80.76.194.10]) by mx1.FreeBSD.org (Postfix) with SMTP id 7AFE543F93 for ; Thu, 17 Jul 2003 13:25:18 -0700 (PDT) (envelope-from andy@evo6.org) Received: (qmail 15708 invoked from network); 17 Jul 2003 20:25:17 -0000 Received: from vx.wi.dhcp.evo6.net (HELO vx) (10.0.2.2) by mx1.evo6.net with SMTP; 17 Jul 2003 20:25:17 -0000 Message-ID: <006f01c34ca1$85ee79f0$0202000a@vx> From: "Andy Gilligan" To: References: <3F159A8C.9050204@almonde.com> <20030717060346.GB22535@otdel1.org><3F16D1AC.8070802@almonde.com> <000901c34c89$439bf270$0202000a@vx> <3F16E28C.10105@almonde.com> Date: Thu, 17 Jul 2003 21:25:11 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1158 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Spam-Status: No, hits=-1.0 required=5.0 tests=QUOTED_EMAIL_TEXT,REFERENCES version=2.55-evo6.net X-Spam-Level: X-Spam-Checker-Version: SpamAssassin 2.55-evo6.net (1.174.2.19-2003-05-19-exp) Subject: Re: MPD 3.13 PPTP server MTU problems & questions 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: Thu, 17 Jul 2003 20:25:20 -0000 ----- Original Message ----- From: "Yann Nottara" To: Sent: Thursday, July 17, 2003 6:53 PM Subject: Re: MPD 3.13 PPTP server MTU problems & questions > but now, what do you think of this ? > > ng0: flags=88d1 mtu 1500 > inet6 fe80::2b0:d0ff:fee1:4874%ng0 prefixlen 64 scopeid 0x7 > inet 192.168.0.10 --> 192.168.0.200 netmask 0xffffffff > > and here's the part from my mpd.conf that's related to this connection : > > pptp0: > new -i ng0 pptp0 pptp0 > set iface disable on-demand > set iface enable proxy-arp > set iface idle 3600 > set bundle enable multilink > set link yes acfcomp protocomp > set link no pap chap > set link enable chap > set link keep-alive 10 60 > set link mtu 1460 <----------------- ! > set ipcp yes vjcomp > set ipcp ranges 192.168.0.10/32 192.168.0.200/32 > set ipcp dns 192.168.0.10 > set ipcp nbns 192.168.0.10 > > So, where's the catch ? Pretty much the same config as myself, with the exeption that I have: set bundle enable compression set ccp yes mppc set ccp yes mpp-e40 set ccp yes mpp-e128 set ccp yes mpp-stateless I've set the MTU to 1460 - as you have, which seems to give me 1396 when a client connects. So far, I've only tested this with Windows XP machines, so I'm not sure if anything OS-specific concerning the MTU is negotiated during the connect phase, or even if having MPPE enabled would affect it. I imagine you've tried setting the MTU to other values? Best regards, -Andy