What internet connection does dom0 use?

[Rootbeer]

Thank you for your quick response, this really helped me. I also found this which is about changing the update proxy.

How-to use a custom qube proxy update

Introduction This guide will explain how to change the update proxy qube that is used when updating templates, this may be useful if you want to download your updates through a VPN or a qube with some caching. Explanations The default update proxy is defined in /etc/qubes/policy.d/90-default.policy in dom0, it defaults to sys-whonix for qubes tagged whonix (which are tor qubes), otherwise it’s sys-net for all other templates. Setup in Qubes OS .42 with the GUI It’s became easy to change the up…