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  1. OpenShift Bugs
  2. OCPBUGS-8676

For IPv6-primary dual-stack cluster, kubelet.service renders only single node-ip

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      When implementing support for IPv6-primary dual-stack clusters, we have extended the available IP families to

      const (
	IPFamiliesIPv4                 IPFamiliesType = "IPv4"
	IPFamiliesIPv6                 IPFamiliesType = "IPv6"
	IPFamiliesDualStack            IPFamiliesType = "DualStack"
	IPFamiliesDualStackIPv6Primary IPFamiliesType = "DualStackIPv6Primary"
)

      At the same time definitions of kubelet.service systemd unit still contain the code

      {{- if eq .IPFamilies "DualStack"}}
        --node-ip=${KUBELET_NODE_IPS} \
{{- else}}
        --node-ip=${KUBELET_NODE_IP} \
{{- end}}

      which only matches the "old" dual-stack family. Because of this, an IPv6-primary dual-stack renders node-ip param with only 1 IP address instead of 2 as required in dual-stack.

              mkowalsk@redhat.com Mat Kowalski
              mkowalsk@redhat.com Mat Kowalski
              Rio Liu Rio Liu
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