Modify resolv.conf configuration
vim /etc/resolv.conf
nameserver 192.168.1.2 192.168.1.252
nameserver 114.114.114.114
nameserver 8.8.8.8
vim /etc/resolv.conf
nameserver 192.168.1.2 192.168.1.252
nameserver 114.114.114.114
nameserver 8.8.8.8