diff --git a/src/tripleo_aio_helpers/create_aio_vm.py b/src/tripleo_aio_helpers/create_aio_vm.py
index 70460b5..6be52f8 100644
--- a/src/tripleo_aio_helpers/create_aio_vm.py
+++ b/src/tripleo_aio_helpers/create_aio_vm.py
@@ -69,6 +69,7 @@ def parse_args():
     args.public_key = args.public_key.read()
 
     args.user_data = args.user_data.read()
+    generate_boot_cmd(args)
     args.user_data = args.user_data.format(data=args)
 
     args.meta_data = args.meta_data.read()
@@ -89,10 +90,7 @@ def parse_args():
 
     return args
 
-
-def write_user_data(data):
-    """Write out a temporary user data file"""
-
+def generate_boot_cmd(data):
     data.bootcmd=""
     if data.cidr_1:
         data.bootcmd = (
@@ -102,7 +100,10 @@ def write_user_data(data):
             '  - "nmcli networking off"\n'
             '  - "nmcli networking on"\n'
         )
-        
+
+def write_user_data(data):
+    """Write out a temporary user data file"""
+
     with open(UD_PATH, "w", encoding="utf-8") as user_data_file:
         user_data_file.write(data)