traefik/pkg/provider/kubernetes/gateway/fixtures/tcproute/simple_cross_provider.yml

---
kind: GatewayClass
apiVersion: gateway.networking.k8s.io/v1
metadata:
  name: my-gateway-class
spec:
  controllerName: traefik.io/gateway-controller

---
kind: Gateway
apiVersion: gateway.networking.k8s.io/v1
metadata:
  name: my-gateway
  namespace: default
spec:
  gatewayClassName: my-gateway-class
  listeners: # Use GatewayClass defaults for listener definition.
    - name: tcp
      protocol: TCP
      port: 9000
      allowedRoutes:
        kinds:
          - kind: TCPRoute
            group: gateway.networking.k8s.io
        namespaces:
          from: Same

---
kind: TCPRoute
apiVersion: gateway.networking.k8s.io/v1alpha2
metadata:
  name: tcp-app-1
  namespace: default
spec:
  parentRefs:
    - name: my-gateway
      kind: Gateway
      group: gateway.networking.k8s.io
  rules:
    - backendRefs:
        - weight: 1
          group: traefik.io
          kind: TraefikService
          name: service@file
          port: 9000
        - name: whoamitcp
          port: 9000
          weight: 1
          group: ""
          kind: Service