Ubuntu 16.04 OpenVPN additional servers

To fix any problems with the additional DNS servers not being pushed on Ubuntu 16.04 try the followings:

– disable Network Manager dnsmasq built in feature

vim /etc/NetworkManager/NetworkManager.conf
# comment out below line
#dns=dnsmasq

– restart network manager

sudo systemctl restart network-manager

Now any DNS servers manually added or pushed by the VPN server will be used by your system.