====== ethtool ======
  * https://docs.nvidia.com/networking-ethernet-software/cumulus-linux-40/Monitoring-and-Troubleshooting/Troubleshooting-Network-Interfaces/Monitoring-Interfaces-and-Transceivers-Using-ethtool/

  * Funkciók lekérdezése: <code bash>
ethtool -i enp1s0f0
</code> <code>
driver: qlcnic
version: 5.3.66
firmware-version: 4.20.1
expansion-rom-version: 
bus-info: 0000:01:00.0
supports-statistics: yes
supports-test: yes
supports-eeprom-access: yes
supports-register-dump: yes
supports-priv-flags: no
</code>
  * Tesztelés: <code bash>
ethtool -t enp1s0f0
</code> <code>
The test result is PASS
The test extra info:
Register_Test_on_offline         0
Link_Test_on_offline     0
Interrupt_Test_offline   0
Internal_Loopback_offline        0
External_Loopback_offline        0
EEPROM_Test_offline      0
</code>
  * Module lekérdezése: <code bash>
ethtool -m enp1s0f0
</code>
  * Energia takarékosság lekérdezése: <code bash>
ethtool --show-eee enp1s0f0
</code>


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