Hi Yang Tao Thanks for your reply. Actually, I am using "uio_pci_generic" as driver. when I query the bind status, I got "drv=uio_pci_generic" like following image. Is there anything else we can do to debug this issue? ------------------原始邮件 ------------------ 发件人:Yang, Tao Y 发送时间:05/22/23 17:34:54 收件人:Nick Tian , users@dpdk.org 抄送:Isaac Gao , Jason Liu 主题:RE: 回复：No packet was send out successfully with EB-LINK intel I226 You can try the uio_pci_generic, don’t use the VFIO-PCI driver. modprobe uio modprobe uio_pci_generic dpdk-devbind.py -b uio_pci_generic xxxx From: Nick Tian Sent: Monday, May 22, 2023 9:22 AM To: Nick Tian ; users@dpdk.org Cc: Isaac Gao ; Jason Liu Subject: 回复：No packet was send out successfully with EB-LINK intel I226 Is there someone know something about this? ----------------------------------------------------- No packet was sent out successfully with EB-LINK intel I226 ------------------原始邮件 ------------------ 发件人:Nick Tian 发送时间:05/19/23 17:37:34 收件人:users@dpdk.org 抄送:Isaac Gao , Jason Liu 主题:No packet was send out successfully with EB-LINK intel I226 Hi Community: There is a problem when I use dpdk-testpmd to execute io mode test. Issue description: No packet was sent out successfully. testpmd cmdline: dpdk-testpmd -l 1,2,3 -n 4 -- -i test mode setup:"set fwd io" then "start" Statistics: No packet was send out. Environment: ThinkCentre-E77+ubuntu22.04 64bit@kernel 5.11.0-27-generic + dpdk 22.11.1 + Intel I226 network adapter Network topology: connect port1 to port2 directly with network cable(No switch was involved). Hugepage: device bind: