[Bug 276760] vtnet driver incorrectly calculates checksums

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=276760

--- Comment #20 from Michael Tuexen <[email protected]> ---
(In reply to vova from comment #19)
That is really interesting. If I summarize it correctly, we have:

vtnet:
                         14.3    stable/14
send w/o offloading       789          772
send w/  offloading       485          523
recv w/o offloading      1938         2052
recv w/  offloading       719          972

vnet:
                         14.3    stable/14
send w/  offloading      1595         1624
send w/o offloading      1425         1584
recv w/  offloading       166         1813
recv w/o offloading      1504         1085

(stable/14 of October 9th; Speed is in Mbps)

What is your setup? I would like to be able to reproduce this locally?
Are you just running the speedtests in a VM using vtnet? Or are other VMs doing
forwarding involved? What is your setup with the vnet? Which interfaces are
used in that case.

Thanks for testing!

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