$ kubectl apply -f manifest.yaml && kubectl -n istio-vt-t18 wait --for=condition=Ready pod/client --timeout=90s
pod/client configured
deployment.apps/echo unchanged
service/echo unchanged
pod/client condition met

$ sleep 5

$ istioctl proxy-status | awk 'NR==1 || /client.istio-vt-t18/'
NAME                                                   CLUSTER        ISTIOD                      VERSION     SUBSCRIBED TYPES
client.istio-vt-t18                                    Kubernetes     istiod-797b447c94-cv7ns     1.30.0      4 (CDS,LDS,EDS,RDS)
--- full proxy-status output (context check) ---
NAME                                                   CLUSTER        ISTIOD                      VERSION     SUBSCRIBED TYPES
client.istio-verify                                    Kubernetes     istiod-797b447c94-cv7ns     1.30.0      4 (CDS,LDS,EDS,RDS)
client.istio-vt-t04                                    Kubernetes     istiod-797b447c94-cv7ns     1.30.0      4 (CDS,LDS,EDS,RDS)
client.istio-vt-t09                                    Kubernetes     istiod-797b447c94-cv7ns     1.30.0      4 (CDS,LDS,EDS,RDS)
client.istio-vt-t11                                    Kubernetes     istiod-797b447c94-cv7ns     1.30.0      4 (CDS,LDS,EDS,RDS)
client.istio-vt-t13                                    Kubernetes     istiod-797b447c94-cv7ns     1.30.0      4 (CDS,LDS,EDS,RDS)
client.istio-vt-t14                                    Kubernetes     istiod-797b447c94-cv7ns     1.30.0      4 (CDS,LDS,EDS,RDS)
client.istio-vt-t15                                    Kubernetes     istiod-797b447c94-cv7ns     1.30.0      4 (CDS,LDS,EDS,RDS)
client.istio-vt-t16                                    Kubernetes     istiod-797b447c94-cv7ns     1.30.0      4 (CDS,LDS,EDS,RDS)
client.istio-vt-t18                                    Kubernetes     istiod-797b447c94-cv7ns     1.30.0      4 (CDS,LDS,EDS,RDS)
echo-5767bbcc56-49ptg.istio-vt-t11                     Kubernetes     istiod-797b447c94-cv7ns     1.30.0      4 (CDS,LDS,EDS,RDS)
echo-5767bbcc56-f9smp.istio-vt-t13                     Kubernetes     istiod-797b447c94-cv7ns     1.30.0      4 (CDS,LDS,EDS,RDS)
echo-5767bbcc56-jh5fj.istio-vt-t18                     Kubernetes     istiod-797b447c94-cv7ns     1.30.0      4 (CDS,LDS,EDS,RDS)
echo-5767bbcc56-ptgfp.istio-vt-t16                     Kubernetes     istiod-797b447c94-cv7ns     1.30.0      4 (CDS,LDS,EDS,RDS)
echo-5767bbcc56-tflz4.istio-vt-t09                     Kubernetes     istiod-797b447c94-cv7ns     1.30.0      4 (CDS,LDS,EDS,RDS)
echo-5c967b5ff-ksk8c.istio-verify                      Kubernetes     istiod-797b447c94-cv7ns     1.30.0      4 (CDS,LDS,EDS,RDS)
echo-graceful-5c69544c84-8vvh6.istio-vt-t04            Kubernetes     istiod-797b447c94-cv7ns     1.30.0      4 (CDS,LDS,EDS,RDS)
echo-graceful-5c69544c84-k8nmf.istio-vt-t04            Kubernetes     istiod-797b447c94-cv7ns     1.30.0      4 (CDS,LDS,EDS,RDS)
egw-mtls-5c55556b78-mrfgw.egress-mtls                  Kubernetes     istiod-797b447c94-cv7ns     1.30.0      3 (CDS,LDS,EDS)
egw-pt-858c44c57d-wwh2l.egress-pt                      Kubernetes     istiod-797b447c94-cv7ns     1.30.0      3 (CDS,LDS,EDS)
fortio-7b8b646bf9-7phzf.dns-lab                        Kubernetes     istiod-797b447c94-cv7ns     1.30.0      4 (CDS,LDS,EDS,RDS)
httpbin-5bc4578794-7kkfb.mesh-test                     Kubernetes     istiod-797b447c94-cv7ns     1.30.0      4 (CDS,LDS,EDS,RDS)
ingress-term-gw-74ccd4985-gjq9d.istio-vt-t09           Kubernetes     istiod-797b447c94-cv7ns     1.30.0      5 (CDS,LDS,EDS,RDS,SDS)
istio-egressgateway-84d48f5f74-dnjf6.istio-system      Kubernetes     istiod-797b447c94-cv7ns     1.30.0      3 (CDS,LDS,EDS)
istio-ingressgateway-778767f96d-wmjm5.istio-system     Kubernetes     istiod-797b447c94-cv7ns     1.30.0      5 (CDS,LDS,EDS,RDS,SDS)
mitig-echo-568999fd69-9nvqq.istio-vt-t04               Kubernetes     istiod-797b447c94-cv7ns     1.30.0      4 (CDS,LDS,EDS,RDS)
mitig-echo-568999fd69-gd979.istio-vt-t04               Kubernetes     istiod-797b447c94-cv7ns     1.30.0      4 (CDS,LDS,EDS,RDS)
netshoot-7fbd9f9bf4-2c7cc.dns-lab                      Kubernetes     istiod-797b447c94-cv7ns     1.30.0      4 (CDS,LDS,EDS,RDS)
phantom-echo-f56f48887-5ls56.istio-vt-t04              Kubernetes     istiod-797b447c94-cv7ns     1.30.0      4 (CDS,LDS,EDS,RDS)
phantom-echo-f56f48887-rbp7d.istio-vt-t04              Kubernetes     istiod-797b447c94-cv7ns     1.30.0      4 (CDS,LDS,EDS,RDS)
portlevel-echo-65467bc78d-h7cwh.istio-vt-t15           Kubernetes     istiod-797b447c94-cv7ns     1.30.0      4 (CDS,LDS,EDS,RDS)
single-target-86867894cf-wvzxv.istio-vt-t14            Kubernetes     istiod-797b447c94-cv7ns     1.30.0      4 (CDS,LDS,EDS,RDS)
sleep-74bf579c94-tjfrt.mesh-test                       Kubernetes     istiod-797b447c94-cv7ns     1.30.0      4 (CDS,LDS,EDS,RDS)
tcp-target.istio-vt-t11                                Kubernetes     istiod-797b447c94-cv7ns     1.30.0      4 (CDS,LDS,EDS,RDS)

--- grep for NOT SENT / ECDS anywhere ---
(no matches for ECDS or NOT SENT in full output)

--- verification: per-proxy sync diff for client (checks for ECDS-specific line) ---
Clusters Match
Listeners Match
Routes Match (RDS last loaded at Sun, 05 Jul 2026 07:51:42 KST)

--- verification: istioctl version ---
client version: 1.30.0
control plane version: 1.30.0
data plane version: 1.30.0 (33 proxies), 65536.65536.65536 (1 proxies)