1 files changed, 2 insertions, 1 deletions
diff --git a/src/linux/tun.c b/src/linux/tun.c
index 385da8d..1faf49d 100644
--- a/src/linux/tun.c
+++ b/src/linux/tun.c
@@ -41,6 +41,7 @@
 #include "tun_helper.h"
 
 #include <stdlib.h>
+#include <unistd.h>
 #include <sys/wait.h>
 #include <fcntl.h>
 #include <sys/ioctl.h>
@@ -56,7 +57,7 @@
 
 int tun_init(tun_device_t* dev, const char* dev_name, const char* dev_type, const char* ifcfg_addr, u_int16_t ifcfg_prefix){
   if(!dev) 
-    return;
+    return -1;
  
   tun_conf(dev, dev_name, dev_type, ifcfg_addr, ifcfg_prefix, 1400);
   dev->actual_name_ = NULL;