pptp(8) on Linux
The text ee58495d26a8, as Debian 4.0 (Etch) shipped it.
PPTP driver
Flags it lists
-
--debug -
--idle-wait -
--localbind -
--loglevel -
--logstring -
--max-echo-wait -
--nobuffer -
--nolaunchpppd -
--phone -
--quirks -
--sync -
--timeout