Hi all, I added the addressing/routing workarounds suggested by Stefano, and the performance measurements now seems to be working flawlessly, even the one Stefano said failed in his runs. I made 5 runs from the master branch, and 5 with my two patches applied. You can observe the resulta at https://drive.google.com/drive/folders/1xGcWJ79smELbWOPwcJdsmyvoIrTz9R56 However, there seems to be a systematic decrease in throughput. If we take the average over the runs for IPv6 ns - > host via tap, we get 33.56 Gb/s vs 31.84 Gb/, i.e. a 5% difference. I don´t really know what to make of this, and would like to know if anybody else can confirm or falsify this. ///jon