# istio_57530.yaml
apiVersion: release-notes/v2
kind: feature
area: traffic-management

# issue is a list of GitHub issues resolved in this note.
# If issue is not in the current repo, specify its full URL instead.
issue:
- 57530

# releaseNotes is a markdown listing of any user facing changes. This will appear in the
# release notes.
releaseNotes:
  - |
    **Added** `DISABLE_SHADOW_HOST_SUFFIX` environment variable to control shadow host suffix behavior in mirror policies. When set to `true` (default), shadow host suffixes are added to hostnames of mirrored requests. When set to `true`, shadow host suffixes are not added. 
    This provides backward compatibility for users upgrading from older Istio versions where shadow host suffixes were added by default via compatibility profiles.