Usage Notes

pptp is started as a psuedo-tty child process using pppd's pty option:

	pppd call provider [pppd-options] \
	pty "/usr/sbin/pptp hostname --nolaunchpppd [pptp-options]"

where hostname is the host name or IP address of the PPTP server.

pptp can also start pppd itself:

	pptp hostname [pptp-options] [pppd-options]

Note the unusual order of arguments, the hostname comes before the
pptp options, and the pppd options come last.

So, for example:

	pptp my.pptp.host debug name cananian \
	remotename ntdialup 172.18.0.2:172.18.0.3

	route add -net 172.18.0.0 netmask 255.255.0.0 gw 172.18.0.3

You will see three pptp-related processes in your process list: a call
manager, a GRE/PPP en/decapsulator, and pppd.  To shut down the pptp
connection, kill the pppd process.

NOTE THAT PPTP MUST BE RUN AS                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           