Red Hat OpenShift Container Platform

Differences between multi-network policy and network policy

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:
```
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:
```
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.