Password used to authenticate with the PPPoE service.
Flags indicating how to handle the #NMSettingPppoe:password property.
If specified, instruct PPPoE to only initiate sessions with access concentrators that provide the specified service. For most providers, this should be left blank. It is only required if there are multiple access concentrators or a specific service is known to be required.
Username used to authenticate with the PPPoE service.
If given, specifies the parent interface name on which this PPPoE connection should be created. If this property is not specified, the connection is activated on the interface specified in #NMSettingConnection:interface-name of #NMSettingConnection.