Use another device.
You might be able to get it to work.
But I think my biggest hurdle would be programming the arduino to sit in between and manage that traffic.
but let's assume bandwidth wasn't an issue
and we're dealing with another internet appliance that isn't a PC
Then the device would have some utility I think.
I'm fine with your throttled bandwidth. I'll type real slow for you.What is controlling it? Is it a client or a server?I'm not convinced that a far faster PC wouldn't be a better choice, but don't let me stop you.