```yaml
...
apiVersion: kubeproxy.config.k8s.io/v1alpha1
kind: KubeProxyConfiguration
mode: ipvs
...
```

before running

`kubeadm init --config <path_to_configuration_file>`

to specify the ipvs mode before deploying the cluster.

**Notes**
If ipvs mode is successfully on, you should see IPVS proxy rules (use `ipvsadm`) like
```shell
 # ipvsadm -ln