The Unity network panel offered a means to set DNS search data on fixed IP connections maintained via NetworkManager in /etc/NetworkManager/system-coonections/<NAME> dns-search variable.
This feature is absent in 18.04 Gnome's gnome-control-center network panel.
Lack of the feature means the dns-search variable is unset which also causes /etc/resolv.conf to leave the search to be unset. This is unacceptable in a assigned IP address Enterprise environment.
One workaround is to manually edit the NetworkManager system-connections file after its creation to set the variable.
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: gnome-control-center 1:3.28.1-0ubuntu1
ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
Uname: Linux 4.15.0-20-generic x86_64
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
Date: Mon Apr 30 12:36:30 2018
InstallationDate: Installed on 2018-04-30 (0 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: gnome-control-center
UpgradeStatus: No upgrade log present (probably fresh install)
Thank you for taking the time to report this bug and helping to make Ubuntu better. The issue you are reporting is an upstream one and it would be nice if somebody having it could send the bug to the developers of the software by following the instructions at https:/