Macbook Pro 因为WIFI问题无限重启。

某一天，Macbook Pro 突然连不上WIFI，重连后无线卡死，重启，只要打开wifi就死机。
天才吧也无能为力，怀疑硬盘问题， 主板问题。
几经周折，取出硬盘用硬盘盒外置启动。Shift启动安全模式。竟然好了。

https://apple.stackexchange.com/questions/389062/macbook-is-lagging-and-freezing-when-connected-to-wifi

I figured out the problem was with my network cache. None of the online help worked for me.

The problem was occurring only for my home WiFi. I connect with the VPN and noticed everything was working smoothly as earlier.

I cleared my DNS cache, and reset the network configurations. I deleted the directory /Library/Preferences/SystemConfiguration/ and run the commands to flush the DNS cache

$ sudo dscacheutil -flushcache
$ sudo killall -HUP mDNSResponder
$ sudo killall -HUP mDNSResponder;sudo killall mDNSResponderHelper;sudo dscacheutil -flushcache

Make sure to take the backup of the SystemConfiguration just incase. Your system can generate the files later.

Hopefully, this will help anyone else who seems to be having freezing issues when connected to the internet.