This is happening on KDE neon (ubuntu 16.04). The network-manager package installed in my case is:
Package: network-manager State: installed Automatically installed: yes Version: 1.2.2-0ubuntu0.16.04.3 Priority: optional Section: net Maintainer: Ubuntu Core Dev Team <ubuntu-devel-disc...@lists.ubuntu.com> Architecture: amd64 Uncompressed Size: 9.769 k -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/1646530 Title: network-manager dns-search Status in network-manager package in Ubuntu: Confirmed Bug description: NetworkManager is ignoring the ipv4.dns-search when using VPN. This was not the case with 14.04 LTS. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1646530/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp