I have to post this on my phone
Logged out, logged in again, cannot get web pages. Can ping to ips, cannot resolve names with ping. Can resolve names with nslookup. Browsing doesn't work obviously but I can get to remote ips like repo locations.
???
REALLY seems like DNS but DNS is working with nslookup and I can change the nameserver in etc/resolv.conf and see nslookup using different nameserver but still no dice when using ping/browser
Any ideas??
Are you using /etc/resolv.conf?
I don't use proton but I found with tailscale it's much more stable to use systemd-resolved because it doesn't overwrite resolv.conf. I don't know if this is the case with proton as I don't know how it treats different resolvers but I would look into it.