How to add nameservers in Ubuntu

Ubuntu (I dont exactly know on which version  its started to do so ) overwrites manual changes made to resolv.conf. Here is what you can

sudo vi /etc/resolvconf/resolv.conf.d/tail

 Enter the below nameservers:

nameserver 10.34.34.221
nameserver 10.34.34.222

and run

resolvconf -u

Done.