The manager is already in the requested sleep/wake state.
The network is already enabled/disabled.
The connection to be activated was already active on another device.
The request could not be completed because a required connection is not active.
The requested connection cannot be activated at this time.
An activation request failed due to a dependency being unavailable.
unknown or unclassified error
Invalid arguments for D-Bus request
A plug-in was needed to complete the activation but is not available.
Permission denied.
The requested connection is not known.
The requested device is not known.
Unknown log domain in SetLogging
Unknown log level in SetLogging
Errors related to the main "network management" interface of NetworkManager. These may be returned from #NMClient methods that invoke D-Bus operations on the "org.freedesktop.NetworkManager" interface, and correspond to D-Bus errors in that namespace.