lxd: allow containers to communicate with the host

roles/lxd/tasks/setup.yml

@@ -62,3 +62,13 @@
     append: true
 
   with_items: "{{ facts_common_admin_users }}"
+
+
+- name: Add firewall rules
+  template:
+    src: firewall.sh
+    dest: "/etc/firewall/lxd.sh"
+    mode: 0744
+
+  notify:
+    - common.reload-firewall

roles/lxd/templates/firewall.sh

+#
+# {{ ansible_managed }}
+#
+
+BRIDGE="lxdbr0"
+
+cmd -I input 3 -i "${BRIDGE}" -j ACCEPT  # Accept all connections from the bridge