I'm afraid this didn't work for me. I installed network-manager
1.2.2-0ubuntu0.16.04.3 from xenial-proposed, ran 'systemctl restart
NetworkManager' as root and reconnected to the VPN and I see the same
behaviour (i.e. I get DNS resolution failure for non-VPN domains). I
am on wifi only and both v4 and v6 are set to route all outbound
traffic.
I'm afraid this didn't work for me. I installed network-manager 16.04.3 from xenial-proposed, ran 'systemctl restart
1.2.2-0ubuntu0.
NetworkManager' as root and reconnected to the VPN and I see the same
behaviour (i.e. I get DNS resolution failure for non-VPN domains). I
am on wifi only and both v4 and v6 are set to route all outbound
traffic.