http://www.securityfocus.com/archive/1/379450
This patch is based on dillon's patch on DragonFlyBSD, which is in
turn derived from OpenBSD's src/usr.sbin/pppd/cbcp.c,v 1.6.
Obtained from: OpenBSD via DragonFlyBSD
Encouraged by: nectar
dial-on-demand, packet filtering, idle timeouts, etc). The IPX support
is pretty much there but more work needs to be done in sys-bsd.c for
the interface ioctls (Linux has a very different way of configuring IPX
interfaces).
Along the way some things have temporarily been lost due to very messy
conflicts. I will recover them shortly when I can think clearer.
The main one is the local:remote address override in pap-secrets and
chap-secrets. Some other home-grown features (dns1,dns2) have been
implemented differently. Microsoft's chap client auth hacks have been
implemented. There are bound to be more rough edges... The changes for
connect-max-retries doesn't fit well with the dial-on-demand code.
mixed up versions. Also, these were imported onto the 1.1.2 branch
(since the last one was imported there, sigh) and that causes cvsup in
checkout mode some problems (there isn't any 1.1.1 branch at all!!).