Question: In the context of eNB to LWIP-SeGW interaction for setting the LWIP offload, how are PDCP SDUs encapsulated to prevent the eNB from interpreting IP packets from the UE?
Option 1: Using a direct IPsec tunnel between the eNB and UE.
Option 2: Through a tunnelling protocol as specified in E-UTRA/E-UTRAN overall description standards.
Option 3: By employing end-to-end encryption at the application layer.
Option 4: Via a dedicated bearer for signaling and data separation.
Explanation: To avoid the eNB interpreting IP packets from the UE, PDCP SDUs are encapsulated in a tunnelling protocol. This approach is standardized to ensure seamless and secure communication between the eNB and LWIP-SeGW without exposing the eNB to direct IP packet interpretation from UEs, thus maintaining network security and efficiency as outlined in E-UTRA/E-UTRAN overall description standards (e.g., TS 36.300).