D (display nat statistics)
Check the "Session log packets" or "User log packets" if increasing by executing multiple times the below command. If the counters are increasing, we could check on the server if syslog packets are received using packet capture but it was not;
<NE40-1>display nat statistics transmitted slot 1 engine 0
This operation will take a few minutes. Press 'Ctrl+C' to break ...
Slot: 1 Engine: 0
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Packets transmitted to interface :16699702
Packets transmitted to mainboard :16620609
Session log packets transmitted :0
User log packets transmitted :0
Transparent packet with nat :161903
Transparent packet without nat :0
Packets transmitted to remote backup interface :0
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