<sales>
This is a user-level ppp implementation that uses the
tun driver.  It was originally created by a Japanese
ISP.  It's now piled with features.  Check the man pages
for details.
</sales>
The sources are identical to the ones in FreeBSD, except
for the Makefile.
IP aliasing (NAT) is disabled, and can be enabled by simply
doing a ``make install'' of libalias, then rebuilding
ppp.  I'll create libalias as a port soon.