For confirmed bugs, please report:
Quoting from the discuss post:
There are some inconsistencies in the way the bytes sent/received and packets sent/received are being mapped in the panw module for filebeat. According to ECS the traditional "bytes_sent" would be mapped to "client.bytes" and/or "source.bytes", and "bytes_received" would be mapped to "server.bytes" and/or "destination.bytes". "packets_sent" would be mapped to "client.packets" and/or "source.packets", and "packets_received" would be mapped to "server.packets" and/or "destination.packets". This is not how panw has been implemented.
PANW pipeline is mapping:
Bytes sent to client/destination bytes.
Bytes received to server/source bytes.
Packets sent to server/destination packets.
Packets received to client/source packets.
All of these mappings are wrong.