I can confirm that this is a bug on Ubuntu 16.04.
I'm also responsible for the VPN server in our company so I can do all the necessary debugging if want something verified. We push 2 DNS servers along with the proper search domain to all clients. this works for other operating systems like Fedora (also using network manager) and OSX so for me its clearly a bug client side in Ubuntu. The bug is evident both on 16.04 and 14.04 we do NOT route all traffic through the VPN tunnel only VPN traffic. Which is a common use case when you don't want to do the heavy lifting of unrelated traffic for hundreds of simultaneous users. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1211110 Title: network manager openvpn dns push data not updating system DNS addresses To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1211110/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs