I'm getting error message "Temporary failure in name resolution" when trying to ping a domain name such as a website. When I ping a discrete IP address then ping works normally.
ping: google.com: Temporary failure in name resolution
This problem only happens when trying to ping a domain instead of an IP, so this seems to be a DNS problem.
My /etc/resolve.conf specifies DNS server 127.0.0.57. After I added nameserver 8.8.8.8 and restarted the service that seemed to fix the problem. However this may be only short term, it may break again, So I need a long term solution.
If anyone has a solution to this issue, it could be awesome.
I've faced the exactly same problem but I've fixed it with another approache.
Using Ubuntu 18.04, first disable systemd-resolved service.
sudo systemctl disable systemd-resolved.service
Stop the service
sudo systemctl stop systemd-resolved.service
Then, remove the link to /run/systemd/resolve/stub-resolv.conf in /etc/resolv.conf
sudo rm /etc/resolv.conf
Add a manually created resolv.conf in /etc/
sudo vim /etc/resolv.conf
Add your prefered DNS server there
nameserver 208.67.222.222
I've tested this with success.