I have a scenario where I wish to disable pure ACKs (TCP ACKs with no data), but I can't find how to do this. Is there an option that I can set so that ACKs are always piggybacked onto the next data packet (of which I can be sure that it will come)?

I tried disabling quickACKs via the `ip route` commando for a specific network range and device, but it didn't seem to have any effect. 
As additional info, I'm running a 4.4 kernel on this maschine. If you need more info, ask and I shall provide.