No ethernet connection available in Ubuntu 20.04

I just installed Ubuntu 20.04 on a clean SSD alongside windows to do C development and when I first booted, there was no internet connection yet my ethernet worked perfectly in windows.

My network controller is the realtek RTL8125 2.5 gb and is labelled “UNCLAIMED” when I run the lshw -C network command. I can access the internet using a USB tether to my phone but nothing I have tried so far has fixed the problem.

Would appreciate any help

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Author: Liam Doughty