See the discussion in the upstream bug report. The fix is in the master branch and needs to be backported to the 1.10 series so that we can pick it up in bionic.
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/1754671 Title: Full-tunnel VPN DNS leakage regression Status in NetworkManager: Fix Released Status in network-manager package in Ubuntu: Fix Released Status in network-manager source package in Bionic: Confirmed Bug description: In 16.04 the NetworkManager package used to carry this patch: http://bazaar.launchpad.net/~network-manager/network-manager/ubuntu/view/head:/debian/patches/Filter-DNS-servers-to-add-to-dnsmasq-based-on-availa.patch It fixed the DNS setup so that when I'm on the VPN, I am not sending unencrypted DNS queries to the (potentially hostile) local nameservers. This patch disappeared in an update. I think it was present in 1.2.2-0ubuntu0.16.04.4 but was dropped some time later. This security bug exists upstream too: https://bugzilla.gnome.org/show_bug.cgi?id=746422 It's not a *regression* there though, as they didn't fix it yet (unfortunately!) To manage notifications about this bug go to: https://bugs.launchpad.net/network-manager/+bug/1754671/+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
