Hi Eric,
Eric> Looking over the code I expect this is over zealous checking
Eric> of potential bug conditions on my part. You can get the
Eric> above message if TCP is doing a zero window probe when it
Eric> gets the FIN from the far end. I've revised the bug check to
Eric> actually look for the error condition I'm worried about
Eric> rather than the short cut check I was using.
That would be mostly unusual.
I believe that what is happening is that the ack is being processed
before tcp_fin in tcp_ack and removes the fin segment out of the
queue. Pretty normal situation.
regards,
Pedro.