istio

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apiVersion: release-notes/v2
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kind: feature
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area: security
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releaseNotes:
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- |
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  **Updated** default value of the feature flag `ENABLE_AUTO_SNI` to true.
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upgradeNotes:
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- title: Default value of the feature flag `ENABLE_AUTO_SNI` to true
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  content: |
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    [auto_sni](https://www.envoyproxy.io/docs/envoy/latest/api-v3/config/core/v3/protocol.proto#envoy-v3-api-field-config-core-v3-upstreamhttpprotocoloptions-auto-sni)
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    is enabled by default. This means SNI will be set automatically based on the downstream HTTP host/authority header if `DestinationRule` does not explicitly set the same.
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    If this is not desired, use the new `compatibilityVersion` feature to fallback to old behavior.
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