Hi I installed a portable Ubuntu using this article
However I have problems resolving DNS.
Sometimes browser cannot resolve
github.com other times some other programs cannot resolve DNS correctly.
ping gihub.com → works
nslookup github.com → does not work
curl https://github.com → does not work
Web browser (chrome) can access github.com
other times all of above works or it takes a very very long time to load the page due to DNS resolution.
My network is set to get DNS server from DHCP server which is my router and this device with ubuntu is the only one that has described problems.
There are too many floating parts like, gnome, systemd-resolve, network manage and who knows what that I know very little about.
If anyone could guide me through the settings or pointing me to the solution / problem that I can work normally?
Eventually, would be downgrading to ubuntu 20.04 LTS a solution?
Also would be good to know where can I find what are supposed to be default settings.