---

# 
- name: Retrieve MAC-address
  shell: /home/core/Scripte/vhost_getMAC "{{ vm_name }}"
  register: vm_mac
  changed_when: "False"


- name: Debug MAC-address 
  debug: msg={{ vm_mac["stdout"] }}
  changed_when: "False"
  
- name: Add a new host in the dhcp pool
  community.libvirt.virt_net:
    name: br_nat
    command: modify
    xml: "<host mac='{{ vm_mac[\"stdout\"] }}' name='{{ vm_name }}' ip='{{ vm_ip }}'/>"

...