I can't do anything but close this bug report as "Invalid", this is not a bug but a design decision. There are other facilities available to provide a similar functionality (/etc/NetworkManager/dispatcher.d) which also runs some of the ifupdown scripts, and we have some support of the most common hooks to ifupdown when running NetworkManager is managed more. Running normally, NetworkManager *will* (and that's expected and wanted behavior) ignore the devices configured in /etc/network/interfaces.
I can't do anything but close this bug report as "Invalid", this is not a bug but a design decision. There are other facilities available to provide a similar functionality (/etc/NetworkMa nager/dispatche r.d) which also runs some of the ifupdown scripts, and we have some support of the most common hooks to ifupdown when running NetworkManager is managed more. Running normally, NetworkManager *will* (and that's expected and wanted behavior) ignore the devices configured in /etc/network/ interfaces.