[Bug 165059] vtnet(4): Networking breaks with a router using virtio net driver on KVM host

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=165059

--- Comment #44 from void@f-m.fm ---
(In reply to Mark Linimon from comment #42)

In terms of iperf3, i.e. throughput, it's not really a workaround.

Setting
hw.vtnet.tso_disable="1"
hw.vtnet.lro_disable="1"
hw.vtnet.csum_disable="1"

in the freebsd guest increases throughput by 5-20% but it's never linespeed for
*any*
version of freebsd guest. It *is* near linespeed for linux guests.

The context here is freebsd host.

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