Date: Thu, 17 Jul 2003 21:25:11 +0100 From: "Andy Gilligan" <andy@evo6.org> To: <freebsd-net@freebsd.org> Subject: Re: MPD 3.13 PPTP server MTU problems & questions Message-ID: <006f01c34ca1$85ee79f0$0202000a@vx> References: <3F159A8C.9050204@almonde.com> <20030717060346.GB22535@otdel1.org><3F16D1AC.8070802@almonde.com> <000901c34c89$439bf270$0202000a@vx> <3F16E28C.10105@almonde.com>
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----- Original Message ----- From: "Yann Nottara" <yann.nottara@almonde.com> To: <freebsd-net@freebsd.org> 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<UP,POINTOPOINT,RUNNING,NOARP,SIMPLEX,MULTICAST> 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
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