I use shelter to use apps that I need to be on for school, like WhatsApp (which I can't stop using unless I am out of school). I used RethinkDNS as both firewall and DNS because I am on a cheap android phone which doesn't really have custom ROM support, I have removed google apps as much as I can, and used RethinkDNS to block other stuff.
Now I recently noticed that RethinkDNS even in lockdown mode does not run in the work profile created by shelter ? So I tried using the inbuilt android private dns with rethink but it doesnot work - since in lockdown mode all traffic is routed through the RethinkDNS. Is there a sollution for this ? I don't just wanna use nextdns through the Android private dns setup as it doesnot give the firewall capability.
tl;dr- how to use RethinkDNS with firewall+dns when using shelter ?
I couldn't even get the inbuilt+rethinkDNS as just a firewall to work. It sucks so bad - but I guess there is nothing the devs can do, since it is an android problem. The problem with running both at the same time is battery life tho