Date: Thu, 17 Jul 2003 19:53:16 +0200 From: Yann Nottara <yann.nottara@almonde.com> To: freebsd-net@freebsd.org Subject: Re: MPD 3.13 PPTP server MTU problems & questions Message-ID: <3F16E28C.10105@almonde.com> In-Reply-To: <000901c34c89$439bf270$0202000a@vx> References: <3F159A8C.9050204@almonde.com> <20030717060346.GB22535@otdel1.org> <3F16D1AC.8070802@almonde.com> <000901c34c89$439bf270$0202000a@vx>
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Andy Gilligan wrote:
> ----- Original Message -----
> From: "Yann Nottara" <yann.nottara@almonde.com>
>>Zs you can see in the following real world example, ng0 (which IS up)
>>MTU stays at 1500 although it's configured to be at 1460 in the mpd.conf
>>configuration file :
>>
>>ng0: flags=8890<POINTOPOINT,NOARP,SIMPLEX,MULTICAST> mtu 1500
>> inet6 fe80::2b0:d0ff:fee1:4874%ng0 prefixlen 64 scopeid 0x7
>
>
> This doesn't look UP to me :)
[...]
> Whenever MPD receives a connection, and assigns that interface to a
> client, it will change the MTU and mark it as UP.
>
> At least, it does for me...
>
> Interface down, mpd running, no client connected:
>
> ng0: flags=8890<POINTOPOINT,NOARP,SIMPLEX,MULTICAST> mtu 1500
> inet6 fe80::209:5bff:fe2f:692c%ng0 prefixlen 64 scopeid 0x7
>
> Client connects:
>
> ng0: flags=88d1<UP,POINTOPOINT,RUNNING,NOARP,SIMPLEX,MULTICAST> mtu 1396
> inet 192.168.0.1 --> 192.168.0.2 netmask 0xffffffff
> inet6 fe80::209:5bff:fe2f:692c%ng0 prefixlen 64 scopeid 0x7
>
> Regards,
> -Andy
Ok, my mistake on this one :)
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 ?
--Yann
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