Section: 5.8.2.12 Reporting of the UE MAC addresses used in a PDU Session
Content: For Ethernet PDU Session type, the SMF may control the UPF to report the different MAC (Ethernet) addresses used as source address of frames sent UL by the UE in a PDU Session. These MAC addresses are called UE MAC addresses. This control and the corresponding reporting takes place over N4. NOTE: This is e.g. used to support reporting of all UE MAC addresses in a PDU Session to the PCF as described in clause 5.6.10.2. The UPF reports the removal of a UE MAC address based on the detection of absence of traffic during an inactivity time. The inactivity time value is provided by the SMF to the UPF.