check out "Cloud Firewall", a #BigTech blocker by Gokulakrishna Sudharsan that was inspired by Kashmir Hill's series and Dhruv Mehrotra's VPN: https://addons.mozilla.org/en-US/firefox/addon/cloud-firewall/
It's regarding how to use alternate dns resolver like TBB (currently we use dns.resolve API provided by Firefox to extensions)
Please read this issue link and boost/share it so I can provide the feature for advanced users/advanced use cases.
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