Currently, if user configuration or settings specify that a software
device is unmanaged, for example:

 [device-bond-unmanaged]
 match-device=interface-name:bond*
 managed=0

or

 [keyfile]
 unmanaged-devices=interface-name:bond*

and there is a connection for the device with autoconnect=yes, NM
creates the platform link and a realized device in unmanaged
state. Fix this, the device should not be realized if it is unmanaged.

https://bugzilla.redhat.com/show_bug.cgi?id=1679230