i had a machine in virtualbox running ubuntu linux, i dont know why the internet was not working. i checked my network and one of the interfaces was connected with NAT.
I could not ping anywhere, the i wanted to check what ip address i had from my DHCP. i send this command:
ifconfig
thats when i got this error:
the program ifconfig is currently not installed
the solution is simple, just run this command:
sudo apt install net-tools
thats it, that was very simple, after that for some reason my internet worked.