t.Errorf("wrong return value from EnsureChain with existing chain")
	}

	// ChainExists
	exists, err := fake.ChainExists(iptables.TableNAT, iptables.Chain("KUBE-TEST"))
	if err != nil {
		t.Errorf("unexpected error checking chain: %v", err)
	} else if !exists {
		t.Errorf("wrong return value from ChainExists with existing chain")
	}
	exists, err = fake.ChainExists(iptables.TableNAT, iptables.Chain("KUBE-TEST-NOT"))
	if err != nil {

		klog.V(2).InfoS("Reloading after iptables flush")
		reloadFunc()
	}
}

// ChainExists is part of Interface
func (runner *runner) ChainExists(table Table, chain Chain) (bool, error) {
	fullArgs := makeFullArgs(table, chain)

	runner.mu.Lock()
	defer runner.mu.Unlock()

	trace := utiltrace.New("iptables ChainExists")
	defer trace.LogIfLong(2 * time.Second)

	_, err := runner.run(opListChain, fullArgs)