"There is a DNS leak" doesn't tell us much. Could you please further describe what you're seeing as incorrect behavior, and exactly how the VPN is configured on the client? Is it set up to "Use this connection only for the resources on its network"? Is that the case for both IPv4 and IPv6?
What are the contents of /etc/resolv.conf, and what happens if you try to send requests meant for the VPN (preferably without any browser or other things running that could send DNS requests), and immediately afterwards send a USR1 signal to dnsmasq? (You can use "sudo kill -USR1 `pidof dnsmasq`", or sudo kill -USR1 just the dnsmasq process spawned by NetworkManager). ** Changed in: openvpn (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1634689 Title: DNS leak after upgrade to 16.10 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/openvpn/+bug/1634689/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs