diff --git a/src/openstack_workload_generator/__main__.py b/src/openstack_workload_generator/__main__.py
index 7d50d26..81b97c6 100644
--- a/src/openstack_workload_generator/__main__.py
+++ b/src/openstack_workload_generator/__main__.py
@@ -45,9 +45,8 @@
                          "adds a ssh proxy jump for the hosts without a floating ip")
 
 parser.add_argument('--wait_for_machines', action="store_true",
-                             help="Wait for every machine to be created "
-                                  "(normally the provisioning only waits for machines which use floating ips)")
-
+                    help="Wait for every machine to be created "
+                         "(normally the provisioning only waits for machines which use floating ips)")
 
 parser.add_argument('--config', type=str,
                     default="default.yaml",
diff --git a/src/openstack_workload_generator/entities/domain.py b/src/openstack_workload_generator/entities/domain.py
index addb4a2..641e1ef 100644
--- a/src/openstack_workload_generator/entities/domain.py
+++ b/src/openstack_workload_generator/entities/domain.py
@@ -98,6 +98,6 @@ def create_and_get_projects(self, create_projects: list[str]):
             self.workload_projects[project_name] = project
             project.close_connection()
 
-    def create_and_get_machines(self, machines: list[str]):
+    def create_and_get_machines(self, machines: list[str], wait_for_machines: bool):
         for project in self.workload_projects.values():
-            project.get_and_create_machines(machines)
+            project.get_and_create_machines(machines, wait_for_machines)
diff --git a/src/openstack_workload_generator/entities/helpers.py b/src/openstack_workload_generator/entities/helpers.py
index e373a15..05f690a 100644
--- a/src/openstack_workload_generator/entities/helpers.py
+++ b/src/openstack_workload_generator/entities/helpers.py
@@ -2,7 +2,6 @@
 import logging
 import os
 import sys
-from pprint import pformat
 from typing import Tuple
 import coloredlogs
 
@@ -23,6 +22,7 @@ class Config:
             'admin_vm_ssh_keypair_name': 'my_ssh_public_key',
             'project_ipv4_subnet': '192.168.200.0/24',
             'public_network': "public",
+            'network_mtu': '1500',
             'number_of_floating_ips_per_project': "1",
             'vm_flavor': 'SCS-1L-1',
             'vm_image': 'Ubuntu 24.04',
@@ -171,6 +171,10 @@ def quota(quota_name: str, quota_category: str, default_value: int) -> int:
         else:
             return default_value
 
+    @staticmethod
+    def get_network_mtu():
+        return int(Config.get("network_mtu", regex=r"\d+"))
+
 
 class DomainCache:
     _domains: dict[str, str] = dict()
diff --git a/src/openstack_workload_generator/entities/network.py b/src/openstack_workload_generator/entities/network.py
index 75e2470..5dabc34 100644
--- a/src/openstack_workload_generator/entities/network.py
+++ b/src/openstack_workload_generator/entities/network.py
@@ -115,7 +115,7 @@ def create_and_get_network(self) -> Network:
         self.obj_network = self.conn.network.create_network(
             name=self.network_name,
             project_id=self.project.id,
-            mtu=1500,
+            mtu=Config.get_network_mtu(),
         )
         if not self.obj_network:
             raise RuntimeError(f"Unable to create network {self.network_name}")
diff --git a/src/openstack_workload_generator/entities/project.py b/src/openstack_workload_generator/entities/project.py
index 73b7da5..84165ba 100644
--- a/src/openstack_workload_generator/entities/project.py
+++ b/src/openstack_workload_generator/entities/project.py
@@ -251,7 +251,11 @@ def dump_inventory_hosts(self, directory_location: str):
                 raise RuntimeError(f"Invalid reference to server for {workload_machine.machine_name}")
 
             workload_machine.update_assigned_ips()
-            data = {
+
+            if not workload_machine.internal_ip:
+                raise RuntimeError(f"Unable to get associated ip address for {workload_machine.machine_name}")
+
+            data: dict[str, str | dict[str, str]] = {
                 "openstack": {
                     "machine_id": workload_machine.obj.id,
                     "machine_status": workload_machine.obj.status,
@@ -267,7 +271,8 @@ def dump_inventory_hosts(self, directory_location: str):
             if self.ssh_proxy_jump and not workload_machine.floating_ip:
                 data["ansible_ssh_common_args"] = f"-o ProxyJump={self.ssh_proxy_jump} "
 
-            base_dir = f"{directory_location}/{data['openstack']['domain']}-{data['openstack']['project']}-{data['hostname']}"
+            base_dir = f"{directory_location}/{self.domain.name}-{workload_machine.project.name}-{workload_machine.machine_name}"
+
             filename = f'{base_dir}/data.yml'
             os.makedirs(base_dir, exist_ok=True)
             with open(filename, 'w') as file: