No enabled connection in a VirtualBox guest if you active bridged networking or NAT.
All is said in the title. Could be seen in both live and installed mode. I have to enable it in order to get a working network. Annoying.
- File Screenshot_at_2018-10-25_21-24-41.png added
I did try to reproduce and some people in the Telegram group. The closest we get to your problem is the first live DVD boot the network did not work, but on the second live DVD boot and all live DVD boot after the network was working fine.
Mouse integration is not working and I am not sure why yet.