if err != nil {
		klog.ErrorS(err, "IPVS interface can't be initialized")
		return nil
	}
	return &runner{
		ipvsHandle: handle,
	}
}

// AddVirtualServer is part of ipvs.Interface.
func (runner *runner) AddVirtualServer(vs *VirtualServer) error {
	svc, err := toIPVSService(vs)
	if err != nil {
		return fmt.Errorf("could not convert local virtual server to IPVS service: %w", err)
	}
	runner.mu.Lock()

// fakeIpvs implements utilipvs.Interface
type fakeIpvs struct {
	ipvsErr   string
	vsCreated bool
}

func (f *fakeIpvs) Flush() error {
	return nil
}
func (f *fakeIpvs) AddVirtualServer(*utilipvs.VirtualServer) error {
	if f.ipvsErr == "AddVirtualServer" {
		return fmt.Errorf("oops")
	}
	f.vsCreated = true
	return nil
}
func (f *fakeIpvs) UpdateVirtualServer(*utilipvs.VirtualServer) error {
	return nil
}

	logger := klog.FromContext(ctx)
	// BUG: https://github.com/moby/ipvs/issues/27
	// If ipvs is not compiled into the kernel no error is returned and handle==nil.
	// This in turn causes ipvs.GetVirtualServers and ipvs.AddVirtualServer
	// to return ok (err==nil). If/when this bug is fixed parameter "ipvs" will be nil
	// if ipvs is not supported by the kernel. Until then a re-read work-around is used.
	if ipvs == nil {