sudo apt-get install dnsmasq

修改/etc/dhcp3/dhclient.conf
#prepend domain-name-servers 127.0.0.1;
去掉#变成
prepend domain-name-servers 127.0.0.1;

修改/etc/resolv.conf
search domain
nameserver 202.100.192.86
nameserver 202.100.199.8
改成
search domain
nameserver 127.0.0.1
nameserver 202.100.192.86
nameserver 202.100.199.8

最后重启
sudo /etc/init.d/dnsmasq restart