DSACK

[Michael Tuexen]

> On 23. Feb 2019, at 10:29, Scheffenegger, Richard <Richard.Scheffenegger at netapp.com> wrote:
> 
> Hi,
> 
> A colleague pointed me to the stack (HEAD) no longer emitting DSACK options a few days ago...
> 
> I was under the impression, that older versions of FreeBSD would send out DSACKs for spurious duplicate packets.
> 
> But when I try this script against HEAD, regular cumulative ACKs without DSACK blocks are showing up.
> 
> Currently bandwidth starved - but was that a conscious decision? Or was me observing DSACKs never a thing?
I would say if it is working in stable/11, but not in stable/12 and head, it is a regression.

Best regards
Michael
> 
> Thanks a lot,
>   Richard
>