diff --git a/hosts.yml b/hosts.yml
index 0d5de83..0f8a837 100644
--- a/hosts.yml
+++ b/hosts.yml
@@ -223,6 +223,8 @@ all:
 
       nut_host: localhost
 
+      nut_listen: "10.0.0.0/24"
+
     caladan:
       ansible_host: caladan
       ansible_user: ansible
diff --git a/roles/nut/tasks/upsd.yml b/roles/nut/tasks/upsd.yml
index 4acfeb9..654bea7 100644
--- a/roles/nut/tasks/upsd.yml
+++ b/roles/nut/tasks/upsd.yml
@@ -27,6 +27,12 @@
         password = "{{ nut_upsmon_password }}"
         upsmon {{ nut_types[nut_mode] }}
 
+- name: add LISTEN line to /etc/nut/upsd.conf
+  lineinfile:
+    path: /etc/nut/upsd.conf
+    regexp: '^LISTEN'
+    line: "LISTEN {{ nut_listen }}"
+
 - name: start and enable nut-upsd
   service:
     name: nut-upsd