I had this same issue and I circumvented it installing the update- systemd-resolved script through the openvpn-systemd-resolved package.
Yesterday I installed the updates on my Ubuntu 18.04 and it broke. I reported it to the other package, but it seems the root cause is in NM: https://github.com/jonathanio/update-systemd- resolved/issues/64#issuecomment-494128506 > update-systemd-resolved is not getting called on the up command at all, however, /usr/lib/NetworkManager/nm-openvpn-service-openvpn-helper is. This seems to be taking over control. Looking at #20 on the OpenVPN tracker, it doesn't support multiple up commands. It also fails silently and there seems to be no interest in fixing it... > You should see these under DNS Servers and one of them selected for Current DNS Server when you look at the systemd-resolve --status for tun0. If not, then this should be considered an upstream bug for NetworkManager, as the helper is not sending the correct settings through the DBus connection to NetworkManager (or NetworkManager is not acting on it properly if it is). ** Bug watch added: github.com/jonathanio/update-systemd-resolved/issues #64 https://github.com/jonathanio/update-systemd-resolved/issues/64 -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/1211110 Title: network manager openvpn dns push data not updating system DNS addresses Status in network-manager package in Ubuntu: Confirmed Status in openvpn package in Ubuntu: Confirmed Bug description: [Triage Notes] Apparently fixed on Ubuntu 17.04, nobody caring about LTS versions. Please see wall of text on comment 50 for a long excuse. [Original Description] When IPv4 Method is set to Automatic VPN, DNS address recieved from OpenVPN server do not update resolv.conf. This can be achieved when using a standard openvpn config file by adding the lines: script-security 2 up /etc/openvpn/update-resolv-conf down /etc/openvpn/update-resolv-conf In Network-manager there seems to be no option to run connection specific scripts and the DNS data from the server is ignored. Ubuntu 13.04 Network-manager 0.9.8.0-0ubuntu6 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1211110/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
