Answer by Bart Jolling for How can I get Hyper V to detect my Ubuntu VM's IP Address

For my Ubuntu 20.04, I followed this guide for Ubuntu 18.04. I can see from the lsmodoutput from the question, that he doesn't require the first steps, but I wanted to post a more complete guide.

First edit the modules file (using nano) to add additional modules:

    sudo nano /etc/initramfs-tools/modules

and add following lines:

    hv_vmbus    hv_storvsc    hv_blkvsc    hv_netvsc

Now install the virtual tools, update the initramfs modules and reboot:

    sudo apt-get install linux-virtual linux-cloud-tools-virtual linux-tools-virtual    sudo update-initramfs -u    sudo reboot