Since 12.04 NetworkManager needs dnsmasq-base as a dependency,
If dnsmasq is installed ie
apt-get install dnsmasq it will try to bind to port 53 which is already in use because of NetworkManager.
To resolve first comment the dnsmasq line from networkmanager.
Add your local dns nameserver to your interface.
127.0.0.1, 220.127.116.11, 18.104.22.168
It can be done on the Network manager interface like in this link: http://askubuntu.com/questions/143819/how-do-i-configure-my-static-dns-in-interfaces
Or with a text editor:
iface eth0 inet static
dns-nameservers 127.0.0.1 22.214.171.124 126.96.36.199
restart Network manager
sudo service network-manager restart
Or the interface from the command line:
sudo service dnsmasq start
Check that you can ping any subdomain:
You should be able to get responses from both