Wireshark-users: Re: [Wireshark-users] Question about "bytes in flight"
From: Bill Meier <wmeier@xxxxxxxxxxx>
Date: Thu, 01 Jul 2010 09:52:40 -0400
Stefaan Pouseele wrote:

To my knowledge the correct value for "Number of bytes in flight" should be
23361 - 18981 = 4380 in this case. That is "Next sequence number" from Frame
92 minus "Acknowledgement number" from frame 91. Is this an known issue or I'm missing something?

Your calculation would seem correct.

Please file a bug (bugs.wireshark.org) and attach a small capture file which shows the problem so it can be looked at.

Thanks