How can I passively monitor the packet loss on TCP connections to/from my machine?
Basically, I'd like a tool that sits in the background and watches TCP ack/nak/re-transmits to generate a report on which peer IP addresses "seem" to be experiencing heavy loss.
Most questions like this that I find of SF suggest using tools like iperf. But, I need to monitor connections to/from a real application on my machine.
Is this data just sitting there in the Linux TCP stack?