Cases
Where it is used
Real sites, and what was stuck before.
01Case
A new computer is not registered yet, but work has to start
sites
The organization's network only admits registered machines. Registering a new one takes a process and a few days.
What was stuck
People are already on site, the machines are on the desk with no internet, and nothing can be done for days.
Result
Turn the PC next to you that already has internet into a gateway, put the client on the new machines, and you can work the same day. Turn it off once registration is done.
02Case
The meeting room has only one network port
sites
A meeting room with one working wall jack, and seven or eight laptops walking in.
What was stuck
The machine with the Ethernet cable can get online; everyone else is on a phone hotspot, and video calls stutter.
Result
Turn the wired machine into a gateway; the other laptops connect to it. One port covers the whole room.