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.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1798813 Title: Internet access in "NAT network" mode doesn't work in Ubuntu LTS 16.04 and LTS 18.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/virtualbox/+bug/1798813/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs