I checked on Ubuntu 18.04 upgraded to 21/11/2019, that means virtualbox 5.2.32. It works perfect now. Problem solved! Virtual machines with NatNetwork mode accesing internet.
I checked on Ubuntu 18.04 upgraded to 21/11/2019, that means virtualbox 5.2.32. It works perfect now. Problem solved! Virtual machines with NatNetwork mode accesing internet.