更新ipv6-host的开源项目 usage: update_hosts [OPTIONS] FILE A simple multi-threading tool used to update hosts file. Options: -h, --help show this help message and exit -s DNS set another dns server, default: 2001:4860:4860::8844 -o OUT_FILE ouput file, default: inputfilename.out -t QUERY_TYPE dig command query type, defalut: aaaa -c, --cname write canonical name into hosts file -n THREAD_NUM set the number of worker threads, default: 10