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[release/v1.6] cherry pick release notes and bump VERSION #8767

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rudrakhp merged 2 commits into from
Apr 16, 2026
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[release/v1.6] cherry pick release notes and bump VERSION #8767

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b647eec
[release/v1.6] add release notes for v1.6.6 (#8765)
rudrakhp Apr 16, 2026
49506c7
bump VERSION
rudrakhp Apr 16, 2026
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2 changes: 1 addition & 1 deletion VERSION
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v1.6.5
v1.6.6
34 changes: 34 additions & 0 deletions release-notes/v1.6.6.yaml
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date: April 16, 2026

# Changes that are expected to cause an incompatibility with previous versions, such as deletions or modifications to existing APIs.
breaking changes: |
Returning 500 direct responses for HTTPRoute and GRPCRoute with invalid filters.
Set HTTPRoute Accepted status to False when RequestMirror filter is used together with DirectResponse or RequestRedirect filters.

# Updates addressing vulnerabilities, security flaws, or compliance requirements.
security updates: |

# New features or capabilities added in this release.
new features: |

bug fixes: |
Fixed propagation of HTTPFilter translation errors to the outer layer.
Fixed 500 errors caused by partially invalid BackendRefs; traffic is now correctly routed between valid backends and 500 responses according to their configured weights.
Fixed SecurityPolicy BasicAuth validation to reject invalid {SHA} htpasswd entries.
Fixed GRPCRoute not detecting conflicting RequestMirror and DirectResponse filters, which caused the mirror to be silently dropped.
Fixed Basic Authentication failing when htpasswd secrets use CRLF line endings by normalizing to LF before passing to Envoy.
Fixed GRPCRoute RequestMirror filter backend not being indexed, causing "service not found" errors for mirror targets that exist in the cluster.
Fixed xRoute status condition when route has mirror filter and the mirror backend has no endpoints.
Fixed gateway-helm RBAC in GatewayNamespace mode with explicit `watch.namespaces` list by adding controller-namespace secret read permissions to infra-manager.
Fixed false metric increments on no-op delete and HPA reconcile paths.
Fixed missing failure-path metric recording for delete and HPA reconcile operations.

# Enhancements that improve performance.
performance improvements: |

# Deprecated features or APIs.
deprecations: |

# Other notable changes not covered by the above sections.
Other changes: |
Improved rate limit e2e test reliability by handling transient network errors during round trips.
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