pppd --version (return code: 0)
pppd version 2.4.7
pppd --help (return code: 0)
pppd version 2.4.7
Usage: pppd [ options ], where options are:
<device> Communicate over the named device
<speed> Set the baud rate to <speed>
<loc>:<rem> Set the local and/or remote interface IP
addresses. Either one may be omitted.
asyncmap <n> Set the desired async map to hex <n>
auth Require authentication from peer
connect <p> Invoke shell command <p> to set up the serial line
crtscts Use hardware RTS/CTS flow control
defaultroute Add default route through interface
file <f> Take options from file <f>
modem Use modem control lines
mru <n> Set MRU value to <n> for negotiation
See pppd(8) for more options.