This feature is off by default, but can be enabled by setting the following flags in Istio:
    `ENABLE_MCS_HOST` and `ENABLE_MCS_SERVICE_DISCOVERY`. When enabled Istio will include the MCS host as a
    domain in the service's HTTP route. Additionally, Istio will support the MCS host during a DNS lookup.

	p2, err := plugin.Open("plugin2.so")
	if err != nil {
		log.Fatalf("plugin.Open failed: %v", err)
	}
	// Check that plugin2's init function was called, and
	// that it modifies the same global variable as the host.
	if got, want := common.X, 2; got != want {
		log.Fatalf("after loading plugin2, common.X=%d, want %d", got, want)
	}

	_, err = plugin.Open("plugin2-dup.so")
	if err == nil {

Xiaopeng Han <******@****.***> 1686841337 +0800

apiVersion: apps/v1
kind: Deployment
metadata:
  name: hello-host-network
spec:
  replicas: 7
  selector:
    matchLabels:
      app: hello-host-network  
      tier: backend
      track: stable
  template:
    metadata:
      labels:
        app: hello-host-network
        tier: backend
        track: stable
    spec:
      containers:
        - name: hello-host-network

Mikio Hara <******@****.***> 1432131643 +0900

Mikio Hara <******@****.***> 1448612238 +0900

Xiaopeng Han <******@****.***> 1686841337 +0800

  configuration.
upgradeNotes:
  - title: Host header fallback disabled by default for Prometheus metrics for *all* inbound traffic.
    content: |
      Host header fallback for determining values for Prometheus `destination_service` labels has been disabled for all incoming traffic.
      Previously, this was disabled *only* for traffic arriving at Gateways. If you are relying on host header fallback behavior to properly

apiVersion: apps/v1
kind: Deployment
metadata:
  creationTimestamp: null
  name: hello-host-network
spec:
  replicas: 7
  selector:
    matchLabels:
      app: hello-host-network
      tier: backend
      track: stable
  strategy: {}
  template:
    metadata:
      creationTimestamp: null
      labels:
        app: hello-host-network
        tier: backend
        track: stable
    spec:
      containers:

apiVersion: release-notes/v2
kind: bug-fix
area: networking
issue:
- 25691
releaseNotes:
- |