Still not fixed.
Same as @rouniy:
When I lock package version: sudo apt install network-manager=1.2.2-0ubuntu0.16.04.4 sudo apt install libnm-glib-vpn1=1.2.2-0ubuntu0.16.04.4 sudo apt install libnm-glib4=1.2.2-0ubuntu0.16.04.4 sudo apt install libnm0=1.2.2-0ubuntu0.16.04.4 sudo apt install libnm-util2=1.2.2-0ubuntu0.16.04.4 sudo apt install resolvconf=1.78ubuntu2 sudo apt-mark hold network-manager sudo apt-mark hold libnm-glib-vpn1 sudo apt-mark hold libnm-glib4 sudo apt-mark hold libnm0 sudo apt-mark hold libnm-util2 sudo apt-mark hold resolvconf
It works again.
Still not fixed.
Same as @rouniy:
When I lock package version: manager= 1.2.2-0ubuntu0. 16.04.4 vpn1=1. 2.2-0ubuntu0. 16.04.4 1.2.2-0ubuntu0. 16.04.4 1.2.2-0ubuntu0. 16.04.4 1.2.2-0ubuntu0. 16.04.4 1.78ubuntu2
sudo apt install network-
sudo apt install libnm-glib-
sudo apt install libnm-glib4=
sudo apt install libnm0=
sudo apt install libnm-util2=
sudo apt install resolvconf=
sudo apt-mark hold network-manager
sudo apt-mark hold libnm-glib-vpn1
sudo apt-mark hold libnm-glib4
sudo apt-mark hold libnm0
sudo apt-mark hold libnm-util2
sudo apt-mark hold resolvconf
It works again.