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- In this video, I want to tell you

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about network device names.

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So what is going on?

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Well, in old Linux,

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network device names were named

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according to the type of network device,

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eth0 for the first
ethernet device and eth1

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if you would have a second one.

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wlan0 for a wireless land device.

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In modern Linux, network
devices are named according

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to their physical
location in the computer,

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with the help of the driver.

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And there was a need for
that, because in Linux

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you often have servers,
multiple network devices.

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And if you have a server
with eight network cards,

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then it's very hard to see the difference,

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the physical difference on your server

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and the identification
of your network card.

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And that is why, nowadays
we have this thing

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called biosdevname.

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Biosdevname uses device
names that reveal information

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about physical location.

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The system D component, system-udevd

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generates the network device names

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based on the information that
it receives from the driver.

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And you will get names
like em123 for embedded

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or P followed by a port
and a P and slot like P0P1,

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which is PCI port zero
and PCI slot number one.

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or eno123 for EtherNet Onboard.

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If the driver does not
reveal sufficient information

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you might still see eth0, and so on,

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but nowadays, eth0 is not
something to be seen anymore.

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You will have to deal with
these ENS interface names

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like we see in the VMware
virtual environment.