{"gatewaylast", gatewaylast, 1, &ipv4Route, ""},
		{"no routes", nothing, 0, nil, ""},
		{"badDestination", badDestination, 0, nil, "invalid IPv4"},
		{"badGateway", badGateway, 0, nil, "invalid IPv4"},
		{"route_Invalidhex", route_Invalidhex, 0, nil, "odd length hex string"},
		{"no default routes", noInternetConnection, 0, nil, ""},
	}
	for _, tc := range testCases {
		r := strings.NewReader(tc.route)
		routes, err := getIPv4DefaultRoutes(r)