value of -1, the route is only added if there is no default route at
all.
.TP
+.B defaultroute6
+Add a default IPv6 route to the system routing tables, using the peer as
+the gateway, when IPv6CP negotiation is successfully completed.
+This entry is removed when the PPP connection is broken. This option
+is privileged if the \fInodefaultroute6\fR option has been specified.
+.TP
.B disconnect \fIscript
Execute the command specified by \fIscript\fR, by passing it to a
shell, after
dynamic IP address option (i.e. set /proc/sys/net/ipv4/ip_dynaddr to
1) in demand mode if the local address changes.
.TP
+.B lcp\-echo\-adaptive
+If this option is used with the \fIlcp\-echo\-failure\fR option then
+pppd will send LCP echo\-request frames only if no traffic was received
+from the peer since the last echo\-request was sent.
+.TP
.B lcp\-echo\-failure \fIn
If this option is given, pppd will presume the peer to be dead
if \fIn\fR LCP echo\-requests are sent without receiving a valid LCP
wishes to prevent users from creating default routes with pppd
can do so by placing this option in the /etc/ppp/options file.
.TP
+.B nodefaultroute6
+Disable the \fIdefaultroute6\fR option. The system administrator who
+wishes to prevent users from adding a default route with pppd
+can do so by placing this option in the /etc/ppp/options file.
+.TP
.B nodeflate
Disables Deflate compression; pppd will not request or agree to
compress packets using the Deflate scheme.
.B xonxoff
Use software flow control (i.e. XON/XOFF) to control the flow of data on
the serial port.
+.SH PPPOE OPTIONS
+To establish PPP link over Ethernet (PPPoE) it is needed to load pppd's
+\fBplugin rp-pppoe.so\fR and then specify option \fBnic-\fIinterface\fR
+instead of modem options \fIttyname\fR and \fIspeed\fR.
+Recognized pppd's PPPoE options are:
+.TP
+.B nic-\fIinterface
+Use the ethernet device \fIinterface\fR to communicate with the peer.
+For example, establishing PPPoE link on \fIeth0\fR interface is done
+by specifying ppp'd option \fBnic-eth0\fR. Prefix \fBnic-\fR for this
+option may be avoided if interface name is unambiguous and does not
+look like any other pppd's option.
+.TP
+.B rp_pppoe_service \fIname
+Connect to specified PPPoE service name.
+.TP
+.B rp_pppoe_ac \fIname
+Connect to specified PPPoE access concentrator name.
+.TP
+.B rp_pppoe_sess \fIsessid\fP:\fImacaddr
+Attach to existing PPPoE session.
+.TP
+.B rp_pppoe_verbose \fIn
+Be verbose about discovered access concentrators.
+.TP
+.B pppoe-mac \fImacaddr
+Connect to specified MAC address.
+.TP
+.B host-uniq \fIstring
+Set the PPPoE Host-Uniq tag to the supplied hex string.
+By default PPPoE Host-Uniq tag is set to the pppd's process PID.
+.TP
+.B pppoe-padi-timeout \fIn
+Initial timeout for discovery packets in seconds (default 5).
+.TP
+.B pppoe-padi-attempts \fIn
+Number of discovery attempts (default 3).
.SH OPTIONS FILES
Options can be taken from files as well as the command line. Pppd
reads options from the files /etc/ppp/options, ~/.ppprc and
.I PPP in HDLC-like Framing.
July 1994.
.TP
+.B RFC1990
+Sklower, K.; et al.,
+.I The PPP Multilink Protocol (MP).
+August 1996.
+.TP
.B RFC2284
Blunk, L.; Vollbrecht, J.,
.I PPP Extensible Authentication Protocol (EAP).