Oops, Goth Queen actually provided a solution earlier, it was just difficult for me to understand at the time. Enter whatever fixed DNS server you want and set 'Automatic (DHCP) addresses only' under IPv4 Settings in network-manager for the default network connection. So just manually entering in your VPN's DNS server (for PIA it's 209.222.18.222) or installing dnscrypt-proxy and choosing 127.0.0.2 as the server both work. This seems an adequate workaround for now.
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to resolvconf in Ubuntu. https://bugs.launchpad.net/bugs/1671606 Title: DNS server from vpn connection is not being used after network-manager upgrade to 1.2.6-0ubuntu0.16.04.1 Status in network-manager package in Ubuntu: Confirmed Status in resolvconf package in Ubuntu: Invalid Bug description: I use my company's cisco vpn via network-manager in Ubuntu 16.04.2 LTS. After recent upgrade of network-manager:amd64 from version 1.2.2-0ubuntu0.16.04.4 to version 1.2.6-0ubuntu0.16.04.1 DNS resolution of VPN's server hostnames does not work. Roll back to version 1.2.2-0ubuntu0.16.04.4 solves the problem. Steps for reproducing: 1. upgrade network-manager:amd64 from version 1.2.2-0ubuntu0.16.04.4 to version 1.2.6-0ubuntu0.16.04.1 2. connect to VPN via network-manager applet 3. nslookop servername.internal --> ** server can't find servername.internal: NXDOMAIN 4. disconnect from VPN via network-manager applet 5. roll back network-manager via command: sudo apt-get install network-manager=1.2.2-0ubuntu0.16.04.4 6. restart network-manager via sudo service network-manager restart 7. connect to VPN via network-manager applet 8. nslookop servername.internal --> the server is resolved correctly ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: network-manager 1.2.6-0ubuntu0.16.04.1 ProcVersionSignature: Ubuntu 4.4.0-66.87-generic 4.4.44 Uname: Linux 4.4.0-66-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.5 Architecture: amd64 CurrentDesktop: Unity Date: Thu Mar 9 19:49:55 2017 InstallationDate: Installed on 2015-10-05 (520 days ago) InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422) NetworkManager.state: [main] NetworkingEnabled=true WirelessEnabled=true WWANEnabled=true WimaxEnabled=true SourcePackage: network-manager UpgradeStatus: No upgrade log present (probably fresh install) nmcli-nm: RUNNING VERSION STATE STARTUP CONNECTIVITY NETWORKING WIFI-HW WIFI WWAN-HW WWAN running 1.2.6 connected started full enabled enabled enabled enabled enabled To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1671606/+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