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ethtool -i <network card> <network card> can be eth0 etc.
Example output:
driver: e1000
version: 7.3.21-k4.1-NAPI
firmware-version: N/A
bus-info: 0000:02:00.0
The bus-info can be coupled with lspci
lspci -s -v "2:"
Where 2: is taken from ethtool bus-info.