@derelict Hi, I Moved to the latest version 21.03.1-1 but same result. Tried configuring directly within the vpp cli still have the same issues on reciving packets on secound SR-IOV interface.
I disabled SR-IOV and passed though both physical nic ports same config using same driver igb_uio and they both function as expected, both receiving and transmiting data.
I can confirm passing multiple SR-IOV interfaces though any other VM's on platforms Linux, Windows, Cisco CSRv and ASAv all interfaces work just fine.
This seems to be a specific issue with TNSR/VPP with multiple SR-IOV interfaces off an Intel x520 as far as i can determine.