Re: TCP stack sometimes loses ACKs ... or something

2006-11-06 Thread David Miller
Window scaling... there is some intermediate device which is trying to prevent "out of window" segments from passing through, but it is not taking the negotiated window scale into account. So it thinks that segments are outside of the window, when they are not. - To unsubscribe from this list: sen

Re: TCP stack sometimes loses ACKs ... or something

2006-11-06 Thread Stephen Hemminger
Neil Brown wrote: I upgraded my notebook from 2.6.16 to 2.6.18 recently and noticed that I couldn't talk to my VOIP device (which has a WEB interface). Watching traffic I see the three-way-handshake working perfectly, and then the first data packet is sent (a partial HTTP request: GET / HTTP/1.1

TCP stack sometimes loses ACKs ... or something

2006-11-06 Thread Neil Brown
I upgraded my notebook from 2.6.16 to 2.6.18 recently and noticed that I couldn't talk to my VOIP device (which has a WEB interface). Watching traffic I see the three-way-handshake working perfectly, and then the first data packet is sent (a partial HTTP request: GET / HTTP/1.1 ) and an ACK c