I have wasted the last 2.5 hours trying to see where I went wrong with my configuration and I just can’t.
For the record, I am running OpenSuse Tumbleweed with Gnome, latest update for everything. Up to now I have been using AdGuard as my DNS resolver, but am now trying to switch to Mullvad but at this point I think I probably don’t want to anymore. Reason being, I just can not get it to work for the life of me.
My system has NetworkManager installed so I go there, select my connected Wifi, and enter Mullvad’s DNS address 194.242.2.4 in thr IPv4 section, then I go to check to see if it shows I am using their DNS and it Firefox AND Vivaldi give no internet connection errors. I go back to Adguard DNS and my internet is back working again. I go back to Mullvad, you guessed it, no internet once again. I even tried Cloudflare and Quad 9’s DNS addresses and both of those worked as well but Mullvad’s just does not want to work and I am going insane over it.
And no I can not edit resolv.conf through the terminal because NetworkManager will override it and no I don’t want to delete NetworkManager. Any feedback would be appreciated.
Try using the private IP options instead and see if that works. The generic one being 10.64.0.1, but other options that include ad voicing and such ranging from 100.64.0.1 to 100.64.0.25 or something like that. I’ve got my entire network setup behind their VPN and a a pihole pointing to one of their private DNS addresses without any issues. I left their pubic DNS years ago so that I could make sure my DNS requests were always within the tunnel instead