W0424 12:25:13.389424       1 deprecated.go:66] 
==== Removed Flag Warning ======================

logtostderr is removed in the k8s upstream and has no effect any more.

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I0424 12:25:13.390245       1 kube-rbac-proxy.go:235] Valid token audiences: 
I0424 12:25:13.391943       1 kube-rbac-proxy.go:349] Reading certificate files
I0424 12:25:13.393171       1 kube-rbac-proxy.go:397] Starting TCP socket on 0.0.0.0:9204
I0424 12:25:13.393497       1 kube-rbac-proxy.go:404] Listening securely on 0.0.0.0:9204