pppd fix for possible DOS

["Andre Nathan" <andre@xxxxxxxxxxxxxxx>]

Hi

The patch at

  http://andre.people.digirati.com.br/dragonfly/patches/pppd.patch

fixes a possible remote DOS against pppd, described in detail at
http://www.securityfocus.com/archive/1/379450/2004-10-24/2004-10-30/0

Patch-taken-from: OpenBSD


BTW, OpenBSD's cvs log says this on a previous revision: "Pedro says we
can change his license too." The licensed was changed to a standard
3-clause BSD license. Maybe DragonFly is interested in doing that too...

Regards,
Andre