Wanna see an overflow?
So my connections started getting finicky yesterday. Out of pure overlearned reflex, I popped open a terminal and started pinging google.com. The connection appeared normal, so I went back to what I was doing and left the window there.
I came across it again this evening just in time to see the sequence number cross 300. It took me a few seconds to realize what happened.
update
So I finally killed it.
--- google.com ping statistics --- 71507 packets transmitted, 69992 packets received, 2% packet loss round-trip min/avg/max/stddev = 94.539/111.947/1088.616/25.285 ms