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openshift-docs/modules/nw-multi-network-policy-differences.adoc

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// Module included in the following assemblies:
//
// * networking/multiple_networks/configuring-multi-network-policy.adoc
:_mod-docs-content-type: CONCEPT
[id="nw-multi-network-policy-differences_{context}"]
= Differences between multi-network policy and network policy
[role="_abstract"]
Although the `MultiNetworkPolicy` API implements the `NetworkPolicy` API, ensure that you understand the following key differences between the two policies:
* You must use the `MultiNetworkPolicy` API, as demonstrated in the following example configuration:
+
[source,yaml]
----
apiVersion: k8s.cni.cncf.io/v1beta1
kind: MultiNetworkPolicy
# ...
----
* You must use the `multi-networkpolicy` resource name when using the CLI to interact with multi-network policies. For example, you can view a multi-network policy object with the `oc get multi-networkpolicy <name>` command where `<name>` is the name of a multi-network policy.
* You can use the `k8s.v1.cni.cncf.io/policy-for` annotation on a `MultiNetworkPolicy` object to point to a `NetworkAttachmentDefinition` (NAD) custom resource (CR). The NAD CR defines the network to which the policy applies. The following example multi-network policy includes the `k8s.v1.cni.cncf.io/policy-for` annotation:
+
[source,yaml]
----
apiVersion: k8s.cni.cncf.io/v1beta1
kind: MultiNetworkPolicy
metadata:
annotations:
k8s.v1.cni.cncf.io/policy-for:<namespace_name>/<network_name>
# ...
----
+
where:
+
`<namespace_name>`:: Specifies the namespace name.
`<network_name>`:: Specifies the name of a network attachment definition.