if ConfigAffectsProxy(req, proxy) {
		return true
	}

	// If the proxy's service updated, need push for it.
	if len(proxy.ServiceTargets) > 0 && req.ConfigsUpdated != nil {
		for _, svc := range proxy.ServiceTargets {
			if _, ok := req.ConfigsUpdated[model.ConfigKey{
				Kind:      kind.ServiceEntry,
				Name:      string(svc.Service.Hostname),

			if port == ingressListener.Port.Number {
				return false
			}
		}
		return true
	}

	// If there is no Sidecar, check if the port is appearing in any service.
	for _, si := range node.ServiceTargets {
		if port == si.Port.TargetPort {
			return false
		}
	}
	return true