On my Ubuntu 17.04 (also happened on 16.10, upgraded to 17.10 that same machine) the bug it's happening to me. My current workaround is to use an equivalent 'openconnect'.
Command issued in my case: sudo openconnect --user my-vpn-user --csd-user my-local-unix-user --csd-wrapper ~/csd-wrapper-download.sh --authgroup GROUP_OF_VPN https://remote.corporate.network.com Another workaround I'm using is to put the internal VPNs IPs on /etc/hosts -- 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