My system is "Unable to resolve" removed entry from /etc/hosts.
During development, I needed to add the custom domain entry to /etc/hosts, stating it resolves to 127.0.0.1. This mapping worked fine.
After I have finished with it and removed the entry, now I see error messages from different tools that claim this my custom name cannot be resolved any longer. Seems that every Java program that attempts to get the local host address is now crashing. I tried to reboot the machine, did not help.
To make possible to work again, I have returned my custom naming to /etc/hosts. Which cleanup is required to get rid of it completely?