identify physical network device by interface name in linux
15,110
The mapping between interface names and devices can be seen in /sys/class/net/
Example:
$ ls -la /sys/class/net
total 0
drwxr-xr-x 2 root root 0 Oct 29 12:49 .
drwxr-xr-x 56 root root 0 Oct 29 12:49 ..
lrwxrwxrwx 1 root root 0 Oct 29 12:49 eth0 -> ../../devices/pci0000:00/0000:00:19.0/net/eth0
lrwxrwxrwx 1 root root 0 Oct 29 12:49 lo -> ../../devices/virtual/net/lo
My eth0
is on a PCI bus, device 0x19, as the symbolic link reveals.
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Author by
user62167
Updated on September 18, 2022Comments
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user62167 over 1 year
I have multiple USB to ethernet devices which are plugged to the same pc.
Is there a way to identify which one is mapped to which eth* network interface via usb port/etc ?
I have tried looking in lsusb and /proc, but haven't found anything useful.
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user62167 almost 12 yearsOnly eth0 is there (the pci network interface, non of the usb are there), so it doens't help.
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user62167 almost 12 yearsThis would work, but its not an option.