How to adjust network settings via SSH

When I installed my HASSIO on my Raspberry PI I created a file network/my-network that looked like this

[connection]
id=hassos-network
uuid=d55162b4-6152-4310-9312-8f4c54d86afa
type=802-3-ethernet

[ipv4]
method=manual
address1=192.168.1.111/24,192.168.1.1
dns=8.8.8.8;8.8.4.4;

[ipv6]
addr-gen-mode=stable-privacy
method=auto

That got me up and going, but now I’m trying to connect to the HA cloud and getting the error “Unable to reach the Home Assistant cloud”. According to this post, I need to remove the ipv6 section from my network settings. How can I do that via SSH? I tried inserting the SD card in my Windows 10 machine but I only see an “overlay folder” and several other files. Nothing for the network settings.

First question, is hassio running on resinos or the newer hassos?

I just installed it two days ago from the install page.. Looks like version 1.7