proxier.natChains.Write("*nat")

	proxier.createAndLinkKubeChain()

	// make sure dummy interface exists in the system where ipvs Proxier will bind service address on it
	_, err := proxier.netlinkHandle.EnsureDummyDevice(defaultDummyDevice)
	if err != nil {
		proxier.logger.Error(err, "Failed to create dummy interface", "interface", defaultDummyDevice)
		return
	}

	// make sure ip sets exists in the system.

		ipt := iptablestest.NewFake()
		ipvs := ipvstest.NewFake()
		ipset := ipsettest.NewFake(testIPSetVersion)
		proxier := NewFakeProxier(ctx, ipt, ipvs, ipset, nil, nil, v1.IPv4Protocol)

		proxier.netlinkHandle.EnsureDummyDevice(defaultDummyDevice)
		if testCases[i].oldVirtualServer != nil {
			if err := proxier.ipvs.AddVirtualServer(testCases[i].oldVirtualServer); err != nil {