--- a/Makefile	Mon Nov 11 20:44:34 2013 -1000
+++ b/Makefile	Tue Nov 12 01:50:50 2013 -1000
@@ -19,9 +19,11 @@
 	install ie-virsh /usr/local/bin/
 	install ie-vagrant /usr/local/bin/
 	install newvm.py /usr/local/bin/
+	install change_vagrantfile.py /usr/local/bin/
 	chmod 4711 /usr/local/bin/ie-virsh
 	chmod 4711 /usr/local/bin/ie-vagrant
 	chmod 755 /usr/local/bin/newvm.py
+	chmod 755 /usr/local/bin/change_vagrantfile.py
 
 clean:
 	rm -f $(TARGET) $(TARGET2) *.o

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/change_vagrantfile.py	Tue Nov 12 01:50:50 2013 -1000
@@ -0,0 +1,20 @@
+#!/usr/bin/python
+# -*- encoding: utf-8 -*-
+
+import sys,os
+
+FILE = "Vagrantfile"
+
+if not os.path.exists(FILE):
+    print(FILE + ":file not found.")
+    sys.exit(1)
+
+f = open(FILE)
+
+file_tmp = []
+for line in f:
+    file_tmp.append(line)
+
+for l in file_tmp:
+    if 'config.vm.network :private_network' in l:
+        

--- a/ie-vagrant.c	Mon Nov 11 20:44:34 2013 -1000
+++ b/ie-vagrant.c	Tue Nov 12 01:50:50 2013 -1000
@@ -12,6 +12,8 @@
 #include <sys/types.h>
 #include <regex.h>
 
+#include <time.h>
+
 /********************************************
  * Vagrant Wrapper - Secure Yourself          *
  *                                          *
@@ -33,6 +35,8 @@
 
 #define NEW(type)  ((type*)malloc(sizeof(type)))
 
+#define VAGRANT_FILE "Vagrantfile"
+
 /* Define global variables */
 
 void 
@@ -41,6 +45,30 @@
   printf("Usage: COMMAND [init|up|destroy|ssh]\n");
 }
 
+void
+exec_init(int uid, int gid)
+{
+    pid_t pid = fork();
+    if (pid < 0) {
+        perror("fork");
+        exit(-1);
+    } else if (pid == 0) {
+        if (execl(command, command, init_command, NULL) < 0) {
+            perror("Execl:");
+        }
+    } else {
+        sleep(2);
+        if (chown(VAGRANT_FILE, uid, gid) != 0) {
+            printf("chown error.\n");
+            exit(1);
+        } 
+        char exec[1024];
+        strncpy(exec, "/usr/local/bin/change_vagrantfile.py", 1024);
+        fprintf(stdout, "executing %s\n", exec);
+        system(exec);
+    }
+}
+
 /* main(int argc, char **argv) - main process loop */
 
 int main(int argc, char **argv)
@@ -70,6 +98,8 @@
   exit(1);
  }
  */
+
+ /* Set env valiable */
     putenv("VAGRANT_HOME=/root/.vagrant.d/");
     putenv("VAGRANT_DEFAULT_PROVIDER=kvm");
 
@@ -86,9 +116,7 @@
  */
 
  if ( strncmp(argv[1], "init", 4) == 0 ) {
-  if (execl(command, command, init_command, NULL) < 0) {
-   perror("Execl:");
-  }
+     exec_init(uid, gid);
  } else if ( strncmp(argv[1], "destroy", 4) == 0 ) {
   if (execl(command, command, destroy_command, NULL) < 0) {
    perror("Execl:");