*** This bug is a duplicate of bug 1671606 *** https://bugs.launchpad.net/bugs/1671606
I have a similar problem. I tried rolling back the network manager from 1.2.6-0ubuntu0.16.04.1 to 1.2.2-0ubuntu0.16.04.4. Oddly, it seemed to fix DNS for a few minutes, but it reverted to not working. I noticed that a few days before the network manager was updated resolvconf also updated. I believe resolvconf is responsible for notifying applications (like the local resolver) when something like a DHCP lease gets established and a new DNS server is needs to be pointed to. I downgraded resolvconf from 1.78ubuntu4 to 1.78ubuntu2 and this seems to have fixed my problem. -- 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/1671964 Title: DNS fails after reconnecting to a VPN Status in network-manager package in Ubuntu: Confirmed Bug description: Since update 1.2.2-0ubuntu0.16.04.3 of network-manager, when I reconnect (i.e. connect, disconnect, connect) to a VPN (OpenVPN), DNS resolution stops working. Workaround: systemctl restart NetworkManager To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1671964/+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