Domain name resolution problem record

link vpn Later, I found that I couldn't surf the Internet , The domain name cannot be resolved
（1） Check whether the domain name can be resolved

nslookup baidu.com

（2） add to 114 a line , This is the domestic domain name resolution server

 sudo vim /etc/resolv.conf

;sangfor-dns-client
nameserver 127.0.0.1
nameserver 114.114.114.114

Just ok 了