Phil, BOOTP is the packets sent by dhcp client. You can check whether Network-manager or dhcp client running in the background. For LLDP packet, FVL with firmware6.0 can't disable it. If FVL with firmware 5.X or lower version, you can disable it in i40e driver. i40e_main.c //pf->hw_features |= I40E_HW_STOP_FW_LLDP; Thanks, Marvin From: Phil.Yang@arm.com [mailto:Phil.Yang@arm.com] Sent: Wednesday, June 13, 2018 6:13 PM To: Liu, Yong Cc: dts@dpdk.org; nd Subject: [dts] How to disable the BOOTP and LLDP packets on tester ? 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