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Date:      Tue, 8 Oct 2002 22:12:12 +0200 (MET DST)
From:      Mikael Hybsch <micke@dynas.se>
To:        <freebsd-net@freebsd.org>
Subject:   Problem with mpd / pptp link between FreeBSD and win98
Message-ID:  <Pine.GSO.4.30.0210082040380.23837-100000@spirit.dynas.se>

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I have a problem with mpd/ng_mppc.

I'm trying to run a pptp link to secure the wireless traffic between
my FreeBSD server/firewall and a win98 machine. I'm using 2 D-Link 520.
The D-Link in the FreeBSD server is running in Host-AP mode.
The wireless link itself works fine.

The problem is that whenever I download a file to the win98 machine the
pptp connection randomly freezes after a few megabytes and I get the
message below in /var/log/messages. The number is always around 4000.
After this I have to reconnect to continue.
I have tried 40 and 128 bit encryption with the same result.

Oct  7 21:30:56 snaps /kernel: ng_mppc_decompress: insane jump 4083

Does someone have any idea about this?

===

I just had a quick look at the code and some more debugging shows
that the new sequence number is less than the current. Does this mean that
mppc got fed an old packet?

/kernel: ng_mppc_decompress: insane jump 4089: (1690-1697) & 0xfff


On a related issue, there is a new l2tp netgraph module. Is there any
work in progress to, for example, extend mpd to be able to act as a l2tp
server?

-- 
 Mikael Hubsch                 Email: Mikael.Hubsch@tfstech.com
 TFS Technology AB             Phone: +46-8-7259730
 Box 10020                     Fax:   +46-8-6494970
 S-121 26 STOCKHOLM, SWEDEN





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