diff --git a/group_vars/prometheus.yml b/group_vars/prometheus.yml
index 73b083d..9044668 100644
--- a/group_vars/prometheus.yml
+++ b/group_vars/prometheus.yml
@@ -1,4 +1,5 @@
 collectd_network_servers: []
 collectd_network_listen:
+- '::'
 - ff18::efc0:4a42
 collectd_prometheus_host: '::1'