Hi I tried running KNI sample application. The host machine has 2 "82599ES 10-Gigabit SFI/SFP+ Network" interfaces, one of which was bound to igb_uio Network devices using DPDK-compatible driver ============================================ 0000:04:00.1 '82599ES 10-Gigabit SFI/SFP+ Network Connection 10fb' drv=igb_uio unused= I started the kni application on that interface root@localhost:/tmp/dpdk-stable-18.11.2/examples/kni# build/kni -c 0x3 -n 2 -- -P -p 0x1 --config="(0,0,1)" EAL: Detected 24 lcore(s) EAL: Detected 2 NUMA nodes EAL: Multi-process socket /var/run/dpdk/rte/mp_socket EAL: Probing VFIO support... EAL: PCI device 0000:04:00.0 on NUMA socket 0 EAL: probe driver: 8086:10fb net_ixgbe EAL: PCI device 0000:04:00.1 on NUMA socket 0 EAL: probe driver: 8086:10fb net_ixgbe EAL: PCI device 0000:08:00.0 on NUMA socket 0 EAL: probe driver: 8086:1583 net_i40e EAL: PCI device 0000:08:00.1 on NUMA socket 0 EAL: probe driver: 8086:1583 net_i40e APP: Initialising port 0 ... KNI: pci: 04:00:01 8086:10fb Checking link status done Port0 Link Up - speed 10000Mbps - full-duplex APP: ======================== APP: KNI Running APP: kill -SIGUSR1 29622 APP: Show KNI Statistics. APP: kill -SIGUSR2 29622 APP: Zero KNI Statistics. APP: ======================== APP: Lcore 1 is writing to port 0 APP: Lcore 0 is reading from port 0 And then bound the vEth0 interface to a local subnet address: root@localhost:~# ip addr add 192.168.0.4/24 dev vEth0 root@localhost:~# ip link set vEth0 up I can ping the interface locally: root@localhost:~# ping -c 1 192.168.0.4 PING 192.168.0.4 (192.168.0.4) 56(84) bytes of data. 64 bytes from 192.168.0.4: icmp_seq=1 ttl=64 time=0.040 ms --- 192.168.0.4 ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 0.040/0.040/0.040/0.000 ms But from a different host, the ping won't succeed: root@gateway-09:~# ping -c 1 192.168.0.4 PING 192.168.0.4 (192.168.0.4) 56(84) bytes of data. From 192.168.0.2 icmp_seq=1 Destination Host Unreachable --- 192.168.0.4 ping statistics --- 1 packets transmitted, 0 received, +1 errors, 100% packet loss, time 0ms Is this expected behavior? I had thought the sample KNI application would just grab packets and forward to the kernel but it seems this is not the case. How do I have the DPDK app grab all packets it sees in the interface and forward to the kernel? Thanks Andrew