In the link give from Till Kampetter here : https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1821052/comments/2
They demand to install from -proposed.
In the link give from Till Kampetter here : https:/ /bugs.launchpad .net/ubuntu/ +source/ network- manager/ +bug/1821052/ comments/ 2
They demand to install from -proposed.