// default config
var config = &DNSConfig{
	HostsFilePath: "/etc/hosts",
	Laddr:         ":5053",
	ListRaddr:     []string{"8.8.8.8:53", "8.8.4.4:53", "1.1.1.1:53", "9.9.9.9:53"},
	UseWildCard:   true,
	Timeout:       15,
}