014.01.38.9. How does NetworkManager handle unmanaged devices, and what options are available for specifying unmanaged devices in the NetworkManager.conf file? Provide an example of specifying unmanaged devices using the keyfile plugin.
Network manager handles unmanaged devices using plug-ins, i.e. the configuration schemes need to be changed in the NetworkManager.conf file. Different plugins have different options for e.g the ifupdown does it by setting managed key-pair to false in the ifupdown section. For the if-cfg plugin it is like this: NM_CONTROLLED = yes. It can also be done by using hardware(MAC) address, for e.g.:-
NetworkManager manages devices by using plugins, and configurations can be adjusted in the NetworkManager.conf file. Various plugins offer different options. For example, in the ifupdown plugin, you can set the managed key-pair to false in the ifupdown section. In the if-cfg plugin, it is specified as NM_CONTROLLED = yes. Additionally, you can use hardware (MAC) addresses to designate unmanaged devices. Here's an example using the keyfile plugin:
