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by gruez 773 days ago
It's probably more straightforward to have the firewall block all traffic from using the non-VPN interfaces (ie. blacklist approach) instead. In the other thread[1] there was disagreement about whether commercial VPN services actually implement their 'killswitch" in this way. Apparently NordVPN does not (hearsay), but neither side provided a good survey of other providers.

[1] https://news.ycombinator.com/item?id=40279632