commented ifupdown2 because it causes problem with network setup at boot on Debian

roles/networking/tasks/main.yml

@@ -29,13 +29,13 @@
   notify: Apply netplan ubuntu
   when: ansible_facts["lsb"]["id"] == "Ubuntu"
 
-- name: Install ifupdown2
-  apt:
-    name:
-      - ifupdown2
-    state: latest
-    update_cache: true
-  when: ansible_facts["lsb"]["id"] == "Debian"
+#- name: Install ifupdown2
+#  apt:
+#    name:
+#      - ifupdown2
+#    state: latest
+#    update_cache: true
+#  when: ansible_facts["lsb"]["id"] == "Debian"
 
 - name: Install bridge-utils
   apt: