On my Mint (18.2 and I think I did it on 18.3 too - both Cinnamon) the network-manager downgrade sufficed; I did not need to adjust resolvconf. However, I don't think I was using a 'PPTP tunnel'.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1688018 Title: DNS server from vpn connection is not being used after network-manager upgrade to 1.2.6 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1688018/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs