diff --git a/etc/kayobe/kolla/config/prometheus/prometheus-blackbox-exporter.yml b/etc/kayobe/kolla/config/prometheus/prometheus-blackbox-exporter.yml
new file mode 100644
index 000000000..2e91afba1
--- /dev/null
+++ b/etc/kayobe/kolla/config/prometheus/prometheus-blackbox-exporter.yml
@@ -0,0 +1,6 @@
+modules:
+  http_2xx_external:
+    prober: http
+    http:
+      preferred_ip_protocol: "ip4"
+
diff --git a/etc/kayobe/kolla/inventory/group_vars/prometheus-blackbox-exporter b/etc/kayobe/kolla/inventory/group_vars/prometheus-blackbox-exporter
index feea1b993..96dfae06c 100644
--- a/etc/kayobe/kolla/inventory/group_vars/prometheus-blackbox-exporter
+++ b/etc/kayobe/kolla/inventory/group_vars/prometheus-blackbox-exporter
@@ -22,7 +22,8 @@ prometheus_blackbox_exporter_endpoints_custom: |
 #  - name:module:endpoint
 # for example
 #  - stackhpc:http_2xx:https://stackhpc.com:443
-stackhpc_prometheus_blackbox_exporter_endpoints_custom: []
+stackhpc_prometheus_blackbox_exporter_endpoints_custom:
+  - ubuntu-archive:http_2xx_external:https://archive.ubuntu.com
 
 stackhpc_prometheus_blackbox_exporter_endpoints_default:
   # Backend endpoints