if shouldIgnore(a) {
		return nil
	}

	pod := a.GetObject().(*api.Pod)

	if a.GetOperation() == admission.Update && a.GetSubresource() == "ephemeralcontainers" {
		return s.limitEphemeralContainerSecretReferences(pod, a)
	}

	if a.GetOperation() != admission.Create {
		// we only validate pod specs during create requests
		return nil
	}

	// Mirror pods have restrictions on what they can reference