IPv6 Subnet

Kube-OVN supports the coexistence of IPv4 and IPv6 subnets in a cluster. However, due to some restrictions of the Kubernetes control plane, if the pod network protocol is inconsistent with the protocol of the Kubernetes control plane, functions such as service discovery cannot work properly. Before using an IPv6 subnet, you are advised to configure the protocol of the Kubernetes control plane to IPv6 to prevent network problems.

The following is an example of creating an IPv6 subnet.

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cat <<EOF | kubectl create -f -
apiVersion: kubeovn.io/v1
kind: Subnet
metadata:
  name: ipv6
spec:
  cidrBlock: 2001:4860::/32
  excludeIps:
  - 2001:4860::1
  gateway: 2001:4860::1
  gatewayType: distributed
  namespaces: [ls2]
  natOutgoing: false
  private: false
  protocol: "IPv6"
EOF