# istio_inbound-cluster-name.yaml
apiVersion: release-notes/v2
kind: feature
area: networking
issues:
  - 26861
releaseNotes:
- |
  **Updated** the inbound Envoy cluster name format to reduce 503 errors during Service changes.

upgradeNotes:
- title: Inbound Cluster Name Format
  content: |
    The format of inbound Envoy cluster names has changed. Previously, they included the Service hostname
    and port name, such as `inbound|80|http|httpbin.default.svc.cluster.local`. This lead to issues when multiple
    Services select the same pod. As a result, we have removed the port name and hostname - the new format will
    instead resemble `inbound|80||`.

    For most users, this is an implementation detail, and will only impact debugging or tooling that directly
    interacts with Envoy configuration.