Comment 75 for bug 1434986

DNS doesn't work for me after reboot either.

My workaround is to manually add DNS entries to /etc/resolv.conf

nameserver 8.8.8.8
nameserver 8.8.4.4

I previously tried adding these via gnome-control-center, but it doesn't respect these settings.

$ lsb_release -rd
Description: Ubuntu 18.04.1 LTS
Release: 18.04

$ apt-cache policy gnome-control-center
gnome-control-center:
  Installed: 1:3.28.2-0ubuntu0.18.04.2
  Candidate: 1:3.28.2-0ubuntu0.18.04.2
  Version table:
 *** 1:3.28.2-0ubuntu0.18.04.2 500
        500 http://us.archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     1:3.28.1-0ubuntu1 500
        500 http://us.archive.ubuntu.com/ubuntu bionic/main amd64 Packages