Question: When a UE connected to EPC establishes/releases PDN connections, what additional information does the SMF+PGW-C provide to the UPF+PGW-U over N4 compared to when the UE is connected to 5GC?
Option 1: Only Service Data Flow related information
Option 2: GBR and MBR values for each GBR bearer of the PDN connection, in addition to Service Data Flow related information
Option 3: CN Tunnel Info for each EPS Bearer only
Option 4: No additional information is provided
Explanation: According to the text, when a UE connected to EPC establishes/releases PDN connections, the SMF+PGW-C provides GBR and MBR values for each GBR bearer of the PDN connection to the UPF+PGW-U over N4, in addition to Service Data Flow related information. This is different from when the UE is connected to 5GC.