istio

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apiVersion: release-notes/v2
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kind: feature
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area: traffic-management
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issue:
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  - 33949
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releaseNotes:
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  - |
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    **Added** experimental support for the Kubernetes Multi-Cluster Services (MCS) host (`clusterset.local`).
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    This feature is off by default, but can be enabled by setting the following flags in Istio:
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    `ENABLE_MCS_HOST` and `ENABLE_MCS_SERVICE_DISCOVERY`. When enabled Istio will include the MCS host as a
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    domain in the service's HTTP route. Additionally, Istio will support the MCS host during a DNS lookup.
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    For now, the MCS host is just an alias for `cluster.local` and resolves to the same service IP.
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    Future work will give the MCS host a separate IP as is defined by the MCS spec.