In ISTIO VirtualService and DestinationRule Not behaving properly, find the manifest below,
when trying to curl my service its distributing traffic to both v1 and v2 pod even after mentioning v1 only in virtual service

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-v1
  namespace: istio
  labels:
    app: nginx
    version: v1
spec:
  selector: 
    matchLabels:
      app: nginx 
      version: v1 
  template:
    metadata:
      labels:
        app: nginx 
        version: v1
    spec:
      containers:
        - name: nginx
          image: chaitanya305/good-morning
          ports:
            - containerPort: 80

---

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-v2
  namespace: istio
  labels:
    app: nginx
    version: v2
spec:
  selector: 
    matchLabels:
      app: nginx 
      version: v2 
  template:
    metadata:
      labels:
        app: nginx 
        version: v2
    spec:
      containers:
        - name: nginx
          image: chaitanya305/good-night
          ports:
          - containerPort: 80

---

apiVersion: v1
kind: Service
metadata:
  name: nginx-svc
  namespace: istio
  labels:
    app: nginx
spec:
  selector:
    app: nginx
  ports:
    - port: 80
      targetPort: 80
      nodePort: 30080
  type: NodePort


---

apiVersion: networking.istio.io/v1beta1
kind: VirtualService
metadata:
  name: my-virtualservice
  namespace: istio
spec:
  hosts:
    - nginx-svc.istio.svc.cluster.local
  http:
    - route:
        - destination:
            host: nginx-svc.istio.svc.cluster.local
            subset: v1

---

apiVersion: networking.istio.io/v1beta1
kind: DestinationRule
metadata:
  name: my-destinationrule
  namespace: istio
spec:
  host: nginx-svc.istio.svc.cluster.local
  subsets:
    - name: v1
      labels:
        version: v1
    - name: v2
      labels:
        version: v2

When i try to acces below url
curl nginx-svc.istio.cluster.local
traffic goes to both v1 and v2 pod, as per virtual service rule it suppose to go to v1 only. which is suppose to provide output as Hi good morning only.

root@jenkins-deployment-f4d955ff4-kpxgj:/tmp# cat bash2.sh
while true
do
curl nginx-svc.istio.svc.cluster.local
sleep 2
done
root@jenkins-deployment-f4d955ff4-kpxgj:/tmp# ./bash2.sh

 Hi good morning 
 good Night sweet dreams 
 Hi good morning 
 Hi good morning 
 Hi good morning 
 good Night sweet dreams
 good Night sweet dreams 
 Hi good morning 

^Croot@jenkins-deployment-f4d955ff4-kpxgj:/tmp#