$ kubectl apply -f manifest.yaml
pod/client created
deployment.apps/weight-echo-v1 created
deployment.apps/weight-echo-v2 created
service/weight-echo created
destinationrule.networking.istio.io/weight-echo-dr created
virtualservice.networking.istio.io/weight-echo-vs created

$ kubectl -n istio-vt-t69 wait --for=condition=Ready pod/client --timeout=90s
pod/client condition met

$ kubectl -n istio-vt-t69 wait --for=condition=available deploy/weight-echo-v1 deploy/weight-echo-v2 --timeout=60s
deployment.apps/weight-echo-v1 condition met
deployment.apps/weight-echo-v2 condition met
$ sleep 5
(slept 5s)

$ istioctl proxy-config route client.istio-vt-t69 -o json | jq '[.[] | select(.virtualHosts[]?.domains[]? == "weight-echo.istio-vt-t69.svc.homelab.local")][0].virtualHosts[0].routes[0].route.weightedClusters.clusters'
null

--- DIAGNOSTIC: spec jq query returned null because it grabs virtualHosts[0]
    (the FIRST vhost in the matching routeConfig), but the routeConfig named "80"
    actually contains TWO virtualHosts on the same route table: one auto-generated
    for the k8s Service FQDN (weight-echo.istio-vt-t69.svc.cluster.local, no VS
    applied) and one for the VirtualService-declared host
    (weight-echo.istio-vt-t69.svc.homelab.local, VS applied). The naive select()
    matches the routeConfig by domain but then indexes virtualHosts[0] which
    happens to be the cluster.local vhost, not the homelab.local one.
    Corrected query selecting the actual matching virtualHost:

$ istioctl proxy-config route client.istio-vt-t69 -o json | jq '[.[].virtualHosts[]? | select(.domains[]? == "weight-echo.istio-vt-t69.svc.homelab.local")][0].routes[0].route.weightedClusters.clusters'
[
  {
    "name": "outbound|80|v1|weight-echo.istio-vt-t69.svc.homelab.local",
    "weight": 80
  },
  {
    "name": "outbound|80|v2|weight-echo.istio-vt-t69.svc.homelab.local",
    "weight": 20
  }
]

--- Optional sanity: actual traffic split observed over 20 requests
$ for i in $(seq 1 20); do kubectl -n istio-vt-t69 exec client -c curl -- curl -s http://weight-echo.istio-vt-t69.svc.homelab.local; echo; done | sort | uniq -c
     20