Question: In a Proxy Mobile IPv6 (PMIPv6) based mobility scenario, when a User Equipment (UE) performs an 'initial attach', what procedure should the Serving GW follow for PMIPv6 PDN Connection Creation?
Option 1: LMA (Local Mobility Anchor) procedure for PDN GW procedures
Option 2: MAG (Mobile Access Gateway) procedure for PDN Connection Creation
Option 3: Combined LMA and MAG procedure for simultaneous connection setup
Option 4: Direct Tunnel Setup without involving LMA or MAG procedures
Explanation: During an 'initial attach' scenario in a PMIPv6 context, the Serving GW acts as a Mobile Access Gateway (MAG). For initial attachments leading to PDN Connection Creation, the Serving GW (acting as MAG) follows specific MAG procedures for seamless connectivity, interacting with the LMA (the PDN GW) for connection establishment.