this isnt a bug from what i see. its a feature that devices configured in /etc/network/interfaces are "unmanaged" unless you enable the (experimental) managed=true in /etc/NetworkManager/nm-system-settings.conf.
this isnt a bug from what i see. its a feature that devices configured in /etc/network/ interfaces are "unmanaged" unless you enable the (experimental) managed=true in /etc/NetworkMan ager/nm- system- settings. conf.