> the packet trace was a bit too cooked perhaps, but there were indications 
quoted text
> that at times the TCP window was going to zero - perhaps something with 
> window updates or persist timers?

Does TCP use different window sizes on loopback?  Why is this not
happening on ethernet?

How could I test this theory?

My initial idea was that it has something todo with the different MTU on
loopback.  My initial block size was 16k, but the problem stayed when I
changed it to 64k.

Felix
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