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-rw-r--r--src/linux/tun.c3
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;