some fixes

handlers/main.yml

@@ -5,3 +5,8 @@
     name: knot
     state: reloaded
   listen: reload nameserver
+
+- name: restart knot
+  service:
+    name: knot
+    state: restarted

tasks/configure.yml

@@ -5,3 +5,12 @@
     src: knot.conf.j2
     dest: /etc/knot/knot.conf
   notify: reload knot
+
+- name: working directory
+  file:
+    path: /var/lib/knot
+    state: directory
+    owner: knot
+    group: knot
+    recurse: yes
+  notify: restart knot

templates/knot.conf.j2

@@ -1,6 +1,12 @@
 server:
+{% if not nameserver_ips is defined%}
     listen: 0.0.0.0@53
     listen: ::@53
+{% else %}
+{% for ip in nameserver_ips %}
+    listen: {{ip|ipaddr('address')}}@53
+{% endfor %}
+{% endif %}
     user: knot:knot
 
 log: