Local area connection 2 is not showing up for me in my capture screen. How do I enable it?

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Assuming you're on Windows, have you got npcap installed as well? Do you see any interfaces?

I do have npcap installed. The only options I have are ethernet, adapter for loopback traffic capture, local area connection 9, 8, 7, 10 and 1, wifi, ethernet 2, and Bluetooth network connection.

What is the output of ipconfig/all on your machine?

What is the output of tshark -D on your machine? (You might have to give the full path for tshark, for example, \"Program Files"\Wireshark\tshark" -D.)

Sounds like school needs to upgrade their instructions. These days Windows makes very creative mess of the interfaces. So it is anyone's guess what interface(s) your machine will come up with.

Assume you must capture traffic on a second interface and document how you do it and how you found out the name.

I agree Hugo. My teacher also just tells me to google it, so it's very frustrating.