int device_fd = -1;
char *device = NULL;
char *iface = NULL;
-char ifrname[IFNAMSIZ];
char *device_info = NULL;
-int device_total_in = 0;
-int device_total_out = 0;
+static int device_total_in = 0;
+static int device_total_out = 0;
bool setup_device(void)
{