I am building my personal private cloud. I am considering using second hand dell optiplexes as worker nodes, but they only have 1 NIC and I’d need a contraption like this for my redundant network.
Then this wish came to my mind. Theoretically, such a one box solution could be faster than gigabit too.
There would be some quality-of-life improvements like being able to replace a switch without pulling down entire cluster, but it is mostly for a challenge.