diff --git a/L2-range-allocation.yaml b/L2-range-allocation.yaml
index 1b92ece..530d09c 100644
--- a/L2-range-allocation.yaml
+++ b/L2-range-allocation.yaml
@@ -1,3 +1,4 @@
+# install-howto https://itnext.io/kubernetes-loadbalancer-service-for-on-premises-6b7f75187be8
 apiVersion: metallb.io/v1beta1
 kind: IPAddressPool
 metadata: