static HANDLE device_handle = INVALID_HANDLE_VALUE;
char *device = NULL;
char *iface = NULL;
-char *device_info = NULL;
+static char *device_info = NULL;
static int device_total_in = 0;
static int device_total_out = 0;
static int nbufs = 64;
-DWORD WINAPI tapreader(void *bla) {
+static DWORD WINAPI tapreader(void *bla) {
int sock, err, status;
struct addrinfo *ai;
struct addrinfo hint = {