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When working with IP configuration, it's important
that you know which device name to use.

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In old Linux, network
device names were simple.

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They were named according to
the Type of network device eth0wlan0

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for instance, for an ethernet
network or the wireless network.

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On modern Linux, network devices are named
according to their physical location in the

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computer and its name is created
based on help of the network driver.

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Now, in case you are wondering why was that
needed? Well, that was needed because eth0, eth1, eth2,

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eth3 and so on was kind of hard
to relate to physical network cards on a computer.

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And that is why we have
BIOS devnames as we call it.

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BIOS dev name uses device names
that reveal information about the physical location.

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The systemd UDEFD program generates
the network device names and

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that might look like EM123
which stands for Ethernet motherboard

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followed by a port
number on that hardware motherboard.

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You can also have
names like P0P1 for

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the PCI bus
and the PCI slot.

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And you can have Eno123
for the Ethernet on board.

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Now, if the driver doesn't reveal sufficient
information, eth0 and so on is used.

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Best advice that I can give
you, just use IP link show

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to figure out what you are
using. Let's do that once again.

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So IP link is
showing that I have ENS160.

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It also has an old
name and that is ENP2S0.

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So the ENP2S0 is the physical
location and ENS160 is the alternate name.

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Just remember about this that these names
are never fixed and you need to

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figure out which network card name is
used on your system to configure accordingly.