Question: In the context of Wireless and Wireline Convergence for the 5G System, what enhancement is introduced to the Npcf_SMPolicyControl_Create and Npcf_SMPolicyControl_Update procedures regarding IPv6 addressing?
Option 1: Allowing PCF to allocate a single /64 IPv6 prefix exclusively for IoT devices.
Option 2: Enabling the allocation of multiple /128 IPv6 addresses or UE IPv6 prefixes shorter than /64 to the Policy Control Function (PCF).
Option 3: Supporting the release of previously allocated /56 IPv6 prefixes to optimize network resources.
Option 4: Mandating the use of DHCPv6 for all IPv6 address assignments in the 5G System.
Explanation: This option correctly reflects the enhancement introduced to the Npcf_SMPolicyControl procedures, which enables the Policy Control Function (PCF) to receive one or multiple allocated /128 IPv6 UE addresses or UE IPv6 prefixes shorter than /64. This is crucial for efficient IP address management and policy control in converged 5G networks, allowing for more flexible and granular allocation of IPv6 resources.