I just wrote a post that explains how to use Linux network namespaces to isolate a particular NIC and how to make some applications to only use this interface.
gemini://axionfield.space/gemlog/20220524-isolate-yourself.gmi
8 months ago · 👍 digbat, c10h14n2
[1] gemini://axionfield.space/gemlog/20220524-isolate-yourself.gmi