Thanks for your support. I'm sure the machine has been restarted after installing the driver. Unfortunately, the wrieshark can capture the traffic from Npcap Loopback adapter but packetbeat can't. I tried it again, but the result likes before.
I change configuration to “devices:2”，and packetbeat can only capture data type "dns" or "http". But my goal is to get the performance of mysql.
Please guide me about that, thanks!