+#define MAXIFNAMELEN 32 /* max length of interface name; or use IFNAMSIZ, can we
+ always include net/if.h? */
+
+/*
+ * If PPP_DRV_NAME is not defined, use the default "ppp" as the device name.
+ * Where should PPP_DRV_NAME come from? Do we include it here?
+ */
+#if !defined(PPP_DRV_NAME)
+#define PPP_DRV_NAME "ppp"
+#endif /* !defined(PPP_DRV_NAME) */