Hi Marvin, I captured groups of bootp and LLDP packets while running DTS on DUT PMD. My environment: Application: l2fwd DUT NIC: 82599ES Tester NIC: X710 Link: Tester <------> DUT X710 port A <-------> 82599ES port A X710 port B <-------> 82599ES port B Please check the attachment. Thanks. How to disable the BOOTP and LLDP packets on tester ? Ps: I didn't find lldpd service running on my tester. Best Regards, Phil Yang