Question: For a ProSe UE-to-NW Relay using PDN connections for relaying communications from ProSe remote UEs, under what condition can content of communication be intercepted from these PDN connections, assuming none of the ProSe remote UEs are targets for interception?
Option 1: When required by national regulation, in which case all EPS interception requirements apply.
Option 2: Automatically, as part of standard network monitoring practices.
Option 3: Only when the ProSe UE-to-NW Relay changes its serving S-GW due to mobility.
Option 4: Never, as these connections are exempt from interception by default.
Explanation: According to specifications for lawful interception in ProSe communications, PDN connections used solely for relaying from ProSe remote UEs don't have content intercepted unless required by national regulation. In this case, all EPS interception requirements apply, ensuring adaptability to legal obligations while maintaining privacy for non-targeted users.