NethServer Version: 7.3.1611Module: yumThe install/update may have failed due to metadata caching issues. Please clean the cache by clicking the button below and retry the install/update operation.
CLEAR YUM CACHE
Please check your network configuration.
Try to resolve a host using the ping comand:
If it doesn't work, check your dns configuration inside /etc/resolv.conf.
The problem is solved. The network was incorrectly configured.