+#define PPPIOCNEWUNIT _IOWR('t', 62, int) /* create new ppp unit */
+#define PPPIOCATTACH _IOW('t', 61, int) /* attach to ppp unit */
+#define PPPIOCDETACH _IOW('t', 60, int) /* detach from ppp unit/chan */
+#define PPPIOCSMRRU _IOW('t', 59, int) /* set multilink MRU */
+#define PPPIOCCONNECT _IOW('t', 58, int) /* connect channel to unit */
+#define PPPIOCDISCONN _IO('t', 57) /* disconnect channel */
+#define PPPIOCATTCHAN _IOW('t', 56, int) /* attach to ppp channel */
+#define PPPIOCGCHAN _IOR('t', 55, int) /* get ppp channel number */