I used Mullvad’s guide to change the DNS in Linux Mint and it worked. But I have a question about Firefox’s DNS over HTTPS settings. Can I turn it to off now that the whole operating system uses the Mullvad DNS?
Yeah you should turn it off, Mullvad’s DNS servers already give you DNS privacy. I forget which DNS servers Firefox’s DoH uses, but it will use some other DNS servers for Firefox with DoH enabled, which presumably you don’t want if you went out of your way to set your DNS servers to Mullvad’s.
Mullvad’s Linux client is a nightmare. I just use the Wireguard config file so I can choose how the rest of the network stack should behave.
Please look also at dohd https://dyne.org/dohd/ as an alternative I know both the author’s, they are super cool! You can ask directly @jaromil@fed.dyne.org
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You mean firefox or the mullvad app? Took me a hot minute to figure out why things aren’t working as expected when setting up adguardhome, turned out the mullvad app was hijacking /etc/resolv.conf to inject mullvad nameservers