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  1. # CentOS 8 and derivatives
  2. CentOS 8 / Oracle Linux 8 / AlmaLinux 8 / Rocky Linux 8 ship only with iptables-nft (ie without iptables-legacy similar to RHEL8)
  3. The only tested configuration for now is using Calico CNI
  4. You need to add `calico_iptables_backend: "NFT"` or `calico_iptables_backend: "Auto"` to your configuration.
  5. If you have containers that are using iptables in the host network namespace (`hostNetwork=true`),
  6. you need to ensure they are using iptables-nft.
  7. An example how k8s do the autodetection can be found [in this PR](https://github.com/kubernetes/kubernetes/pull/82966)