демон протокола точка-точка (Point-to-Point Protocol Daemon)
Примечание (Note)
Some limited degree of control can be exercised over a running
pppd process by sending it a signal from the list below.
SIGINT, SIGTERM
These signals cause pppd to terminate the link (by closing
LCP), restore the serial device settings, and exit. If a
connector or disconnector process is currently running,
pppd will send the same signal to its process group, so as
to terminate the connector or disconnector process.
SIGHUP This signal causes pppd to terminate the link, restore the
serial device settings, and close the serial device. If
the persist or demand option has been specified, pppd will
try to reopen the serial device and start another
connection (after the holdoff period). Otherwise pppd
will exit. If this signal is received during the holdoff
period, it causes pppd to end the holdoff period
immediately. If a connector or disconnector process is
running, pppd will send the same signal to its process
group.
SIGUSR1
This signal toggles the state of the debug option.
SIGUSR2
This signal causes pppd to renegotiate compression. This
can be useful to re-enable compression after it has been
disabled as a result of a fatal decompression error.
(Fatal decompression errors generally indicate a bug in
one or other implementation.)
