I have a machine who’s mission is to run FreeDOS. It will do this most of the time, but sometimes it would be nice to be able to get it connected to a modern network to transfer DOS files out to my ‘production machine’ If DOS is like Windows the system clock ticks local time, but usually Linux likes UTC time - so this may be an issue that needs resolving too.
sudo timedatectl set-local-rtc 1
https://www.baeldung.com/linux/real-time-clock-rtc-local-time
This is The Way.