This is a simple folk.
警告：目前本项目Feb 8, 2023之后的commit 都无法工作，等有时间再修复吧
目前可以使用 Mythologyli 大佬的项目
TODO list:
- Parse dns config from rconf and use it as Default dns server (√)
- ignore Exception domains (from conf) when using intranet dns server
- UDP protocol support (√)