diff --git a/tutorial/1-1-create-vm.md b/tutorial/1-1-create-vm.md
index 0d24343a6721b6b57567f54defae9ea1e301c65e..d32f97ebc922a10826acc1175824363e4602a2ea 100644
--- a/tutorial/1-1-create-vm.md
+++ b/tutorial/1-1-create-vm.md
@@ -1,100 +1,100 @@
-# 1.1. Create VM for the TeraFlowSDN controller
-
-In this section, we install a VM to be used as the deployment, execution, and development environment for the ETSI
-TeraFlowSDN controller. If you already have a remote physical server fitting the requirements specified in this section
-feel free to use it instead of deploying a local VM. Other virtualization environments can also be used; in that case,
-you will need to adapt these instructions to your particular case.
-
-
-## 1.1.1. Create a NAT Network in VirtualBox
-In "Oracle VM VirtualBox Manager", Menu "File > Preferences... > Network", create a NAT network with the following
-specifications:
-
-|Name       |CIDR       |DHCP    |IPv6    |
-|-----------|-----------|--------|--------|
-|TFS-NAT-Net|10.0.2.0/24|Disabled|Disabled|
-
-Within the newly created "TFS-NAT-Net" NAT network, configure the following IPv4 forwarding rules:
-
-|Name|Protocol|Host IP  |Host Port|Guest IP |Guest Port|
-|----|--------|---------|---------|---------|----------|
-|SSH |TCP     |127.0.0.1|2200     |10.0.2.10|22        |
-|HTTP|TCP     |127.0.0.1|8080     |10.0.2.10|80        |
-
-__Note__: IP address 10.0.2.10 is the one that will be assigned to the VM.
-
-
-## 1.1.2. Create VM in VirtualBox:
-In "Oracle VM VirtualBox Manager", create a new VM with the following specifications:
-
-- Name: TFS-VM
-- Type/Version: Linux / Ubuntu (64-bit)
-- CPU (*): 4 vCPUs @ 100% execution capacity
-- RAM: 8 GB
-- Disk: 40 GB, Virtual Disk Image (VDI), Dynamically allocated
-- Optical Drive ISO Image: "ubuntu-20.04.4-live-server-amd64.iso"
-  (from [Ubuntu Server 20.04 LTS](https://releases.ubuntu.com/20.04/))
-- Network Adapter 1 (*): enabled, attached to NAT Network "TFS-NAT-Net"
-- Minor adjustments (*):
-  - Audio: disabled
-  - Boot otder: disable "Floppy"
-
-__Note__: (*) settings to be editing after the VM is created.
-
-
-## 1.1.3. Install Ubuntu 20.04 LTS Operating System
-In "Oracle VM VirtualBox Manager", start the VM in normal mode, and follow the installation procedure. Below we provide
-some installation guidelines:
-- Installation Language: English
-- Autodetect your keyboard
-- Configure static network specifications:
-
-|Interface|IPv4 Method|Subnet     |Address  |Gateway |Name servers   |Search domains|
-|---------|-----------|-----------|---------|--------|---------------|--------------|
-|enp0s3   |Manual     |10.0.2.0/24|10.0.2.10|10.0.2.1|8.8.8.8,8.8.4.4|<empty>       |
-
-- Leave proxy and mirror addresses as they are
-- Update the installer (if needed). At the time of writing this walkthrough, version 22.06.1 is the newest one.
-- Use an entire disk for the installation
-  - Disable setup of the disk as LVM group
-  - Double check that NO swap space is allocated in the partition table. Kubernetes does not work properly with SWAP.
-- Configure your user and system names:
-  - User name: TeraFlowSDN
-  - Server's name: tfs-vm
-  - Username: tfs
-  - Password: tfs123
-- Install Open SSH Server
-  - Import SSH keys, if any.
-- Featured Server Snaps
-  - Do not install featured server snaps. It will be done manually later to illustrate how to uninstall and reinstall
-    them in case of trouble with.
-- Let the system install and upgrade the packages.
-  - This operation might take some minutes depending on how old is the Optical Drive ISO image you use and your
-    Internet connection speed.
-- Restart the VM when the installation is completed.
-
-
-## 1.1.4. Upgrade the Ubuntu distribution
-```bash
-sudo apt-get update -y
-sudo apt-get dist-upgrade -y
-```
-
-
-## 1.1.5. Install VirtualBox Guest Additions
-On VirtualBox Manager, open the VM main screen. If you are running the VM in headless mode, right click over the VM in
-the VirtualBox Manager window and click "Show". If a dialog informing about how to leave the interface of the VM is
-hown, confirm pressing "Switch" button. The interface of the VM should appear.
-
-Click menu "Device > Insert Guest Additions CD image..."
-
-On the VM terminal, type:
-```bash
-sudo apt-get install -y linux-headers-$(uname -r) build-essential dkms
-  # This command might take some minutes depending on your VM specs and your Internet access speed.
-sudo mount /dev/cdrom /mnt/
-cd /mnt/
-sudo ./VBoxLinuxAdditions.run
-  # This command might take some minutes depending on your VM specs.
-sudo reboot
-```
+# 1.1. Create VM for the TeraFlowSDN controller
+
+In this section, we install a VM to be used as the deployment, execution, and development environment for the ETSI
+TeraFlowSDN controller. If you already have a remote physical server fitting the requirements specified in this section
+feel free to use it instead of deploying a local VM. Other virtualization environments can also be used; in that case,
+you will need to adapt these instructions to your particular case.
+
+
+## 1.1.1. Create a NAT Network in VirtualBox
+In "Oracle VM VirtualBox Manager", Menu "File > Preferences... > Network", create a NAT network with the following
+specifications:
+
+|Name       |CIDR       |DHCP    |IPv6    |
+|-----------|-----------|--------|--------|
+|TFS-NAT-Net|10.0.2.0/24|Disabled|Disabled|
+
+Within the newly created "TFS-NAT-Net" NAT network, configure the following IPv4 forwarding rules:
+
+|Name|Protocol|Host IP  |Host Port|Guest IP |Guest Port|
+|----|--------|---------|---------|---------|----------|
+|SSH |TCP     |127.0.0.1|2200     |10.0.2.10|22        |
+|HTTP|TCP     |127.0.0.1|8080     |10.0.2.10|80        |
+
+__Note__: IP address 10.0.2.10 is the one that will be assigned to the VM.
+
+
+## 1.1.2. Create VM in VirtualBox:
+In "Oracle VM VirtualBox Manager", create a new VM with the following specifications:
+
+- Name: TFS-VM
+- Type/Version: Linux / Ubuntu (64-bit)
+- CPU (*): 4 vCPUs @ 100% execution capacity
+- RAM: 8 GB
+- Disk: 40 GB, Virtual Disk Image (VDI), Dynamically allocated
+- Optical Drive ISO Image: "ubuntu-20.04.4-live-server-amd64.iso"
+  (from [Ubuntu Server 20.04 LTS](https://releases.ubuntu.com/20.04/))
+- Network Adapter 1 (*): enabled, attached to NAT Network "TFS-NAT-Net"
+- Minor adjustments (*):
+  - Audio: disabled
+  - Boot otder: disable "Floppy"
+
+__Note__: (*) settings to be editing after the VM is created.
+
+
+## 1.1.3. Install Ubuntu 20.04 LTS Operating System
+In "Oracle VM VirtualBox Manager", start the VM in normal mode, and follow the installation procedure. Below we provide
+some installation guidelines:
+- Installation Language: English
+- Autodetect your keyboard
+- Configure static network specifications:
+
+|Interface|IPv4 Method|Subnet     |Address  |Gateway |Name servers   |Search domains|
+|---------|-----------|-----------|---------|--------|---------------|--------------|
+|enp0s3   |Manual     |10.0.2.0/24|10.0.2.10|10.0.2.1|8.8.8.8,8.8.4.4|<empty>       |
+
+- Leave proxy and mirror addresses as they are
+- Let the installer self-upgrade (if asked). At the time of writing this walkthrough, the version of the installer is 22.06.1. Anyway, Ubuntu 20.04 LTS OS will be installed.
+- Use an entire disk for the installation
+  - Disable setup of the disk as LVM group
+  - Double check that NO swap space is allocated in the partition table. Kubernetes does not work properly with SWAP.
+- Configure your user and system names:
+  - User name: TeraFlowSDN
+  - Server's name: tfs-vm
+  - Username: tfs
+  - Password: tfs123
+- Install Open SSH Server
+  - Import SSH keys, if any.
+- Featured Server Snaps
+  - Do not install featured server snaps. It will be done manually later to illustrate how to uninstall and reinstall
+    them in case of trouble with.
+- Let the system install and upgrade the packages.
+  - This operation might take some minutes depending on how old is the Optical Drive ISO image you use and your
+    Internet connection speed.
+- Restart the VM when the installation is completed.
+
+
+## 1.1.4. Upgrade the Ubuntu distribution
+```bash
+sudo apt-get update -y
+sudo apt-get dist-upgrade -y
+```
+
+
+## 1.1.5. Install VirtualBox Guest Additions
+On VirtualBox Manager, open the VM main screen. If you are running the VM in headless mode, right click over the VM in
+the VirtualBox Manager window and click "Show". If a dialog informing about how to leave the interface of the VM is
+hown, confirm pressing "Switch" button. The interface of the VM should appear.
+
+Click menu "Device > Insert Guest Additions CD image..."
+
+On the VM terminal, type:
+```bash
+sudo apt-get install -y linux-headers-$(uname -r) build-essential dkms
+  # This command might take some minutes depending on your VM specs and your Internet access speed.
+sudo mount /dev/cdrom /mnt/
+cd /mnt/
+sudo ./VBoxLinuxAdditions.run
+  # This command might take some minutes depending on your VM specs.
+sudo reboot
+```