Virtualized VyOS iperf3 slower than other VMs

General questions
3

I’ve checked the differences between the vyos 1.2.5 and 1.3. The latter has some options off by default, such as tcp-segmentation-offload, generic-segmentation-offload, generic-receive-offload. I’ve enabled all of them with:

ethtool -K ethX sg on
ethtool -K ethX gso on
ethtool -K ethX gro on

Iperf3 tests now show 20 Gbits/s between routed VMs.

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