Merge pull request #40028 from Amrita42/BZ2032484

BZ2032484: added an admonition

Author: mburke5678

networking/multiple_networks/configuring-additional-network.adoc

@@ -26,7 +26,13 @@ For an additional network, IP addresses are provisioned through an IP Address Ma
 [id="{context}_configuration-additional-network-attachment"]
 == Configuration for an additional network attachment
 
-An additional network is configured via the `NetworkAttachmentDefinition` API in the `k8s.cni.cncf.io` API group. The configuration for the API is described in the following table:
+An additional network is configured via the `NetworkAttachmentDefinition` API in the `k8s.cni.cncf.io` API group.
+[IMPORTANT]
+====
+Do not store any sensitive information or a secret in the `NetworkAttachmentDefinition` object because this information is accessible by the project administration user.  
+====
+
+The configuration for the API is described in the following table:
 
 .`NetworkAttachmentDefinition` API fields
 [cols=".^3,.^2,.^5",options="header"]