This is expected, and similar output has been seen before.
Jan Dubiec's pppd works with Jan Dubiec's PPP MPPE/MPPC kernel module,
and does not always work with the PPP MPPE module maintained by the PPP
team.
In upgrading to 2.6.15, one should also convert to the upstream pppd
from ppp.samba.org.
Begin forwarded message:
Date: Wed, 4 Jan 2006 12:53:40 -0800
From: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Subject: [Bugme-new] [Bug 5827] New: pppd with MPPE fails
http://bugzilla.kernel.org/show_bug.cgi?id=5827
Summary: pppd with MPPE fails
Kernel Version: 2.6.15