WSL 无法解析域名：

Could not resolve hostname github.com: Temporary failure in name resolution

解决方法一：

配置本地域名解析：

1. sudo vim /etc/hosts

2. 添加如下配置: (172.65.251.78是ping成功的ip)

    172.65.251.78 github.com
   

解决方法二：

1. Boot your distro.

2. cd ~/../../etc

3. Create wsl.conf, however you see fit. sudo vim wsl.conf, sudo touch wsl.conf and edit it later, whatever.

4. Add these lines to wsl.conf:

   [network]
   generateResolvConf=false
   

5. exit or in Windows cmd wsl --terminate [YourDistroName]

6. Boot your distro.
   At this point, thanks to wsl.conf, run/resolvconf should no longer exist and will never be created again.

7. cd ~/../../etc

8. sudo rm resolv.conf sudo rm resolv.conf

9. Create a new resolv.conf, however you see fit. sudo vim resolv.conf, sudo touch resolv.conf and edit it later, whatever.

10. Add this line to resolv.conf:

    nameserver 8.8.8.8
    

replace 8.8.8.8 with your preferred functional nameserver.

11. exit or in Windows cmd wsl --terminate [YourDistroName]
12. wsl --shutdown just to be sure that you’ve definitely killed everything.
13. Boot your distro.
14. Confirm that your resolv.conf changes are still in effect, or just ping a domain name and cry tears of joy after struggling to get this working for far too fucking long.

参考文献：

https://github.com/microsoft/WSL/issues/5256