DUP ACKs sent with no reason

[Muenz, Michael]

Am 27.12.2018 um 19:32 schrieb Youssef GHORBAL:
> 	
> 	What can explain those DUP ACKs sent by the FreeBSD host? (DUP ACKs sent by the client are "normal" in a way to report missing packet loss and carry Selective ACKs, but those sent by the BSD stack are hard to explain)
>
> 	How can I push the investigation further ?
>
Hi,


I had similar phenomenons with DUP ACKs, lost packets and also duplicate 
ICMP replies when using Intel X710 cards.

Did you test exchanging hardware and trying Linux-only and/or BSD-only 
iperf to look for a difference?


Best,

Michael