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From: "James E. Housley" <housley@pr-comm.com>
Posted-Date: Thu, 20 Mar 1997 18:11:20 -0500 (EST)
Message-Id: <199703202311.SAA06982@pr-comm.com>
Subject: RE: tun0/user ppp lockups?
To: freebsd-hackers@freebsd.org
Date: Thu, 20 Mar 1997 18:11:20 -0500 (EST)
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I have been having similar problems.  I changed to lines yesterday in
ppp.conf and things seem better.  Haven't run long enough to be sure.
In 2.1.x it was recomended to disable and deny lqr (Line Quality).
I noticed that 2.2.x enables that by default.

enable lqr
accept lqr

could be changed to 

disable lqr
deny lqr

Try it and see if it helps.

Jim.