+.B /etc/ppp/net\-init
+This script will be executed the moment the ppp unit number is known. This
+script will be waited for and should not cause significant delays. This can be
+used to update book-keeping type systems external to ppp and provides the only
+guaranteed point where a script can be executed knowing the ppp unit number
+prior to LCP being initiated. It is executed with the parameters
+.IP
+\fIinterface\-name tty\-device speed ipparam
+.TP
+.B /etc/ppp/net\-pre\-up
+This script will be executed just prior to NCP negotiations initiating, and is
+guaranteed to be executed whilst the interface (Linux) and/or sub-interfaces
+(Solaris) as the case may be is/are still down. ppp will block waiting for
+this script to complete, and the interface may be safely renamed in this script
+(using for example "ip li set dev $1 name ppp-foobar". The parameters are the
+same as for net\-init.
+.TP
+.B /etc/ppp/net\-down
+This script will be executed just prior to ppp terminating and will not be
+waited for. The parameters are the same as for net\-init.
+.TP