Usage: Unable to ping DPDK-kni-captured NIC ports

Usage: Unable to ping DPDK-kni-captured NIC ports

[李启闻]

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Hi, 
I followed the instructions in https://doc.dpdk.org/guides-20.11/sample_app_ug/kernel_nic_interface.html <https://doc.dpdk.org/guides-20.11/sample_app_ug/kernel_nic_interface.html > to run the KNI sample application with DPDK v20.11.8. 
The NIC status is shown below. Remote ping 10.11.140.8 is successful. 
Firstly I bind enp3s0 to `uio_pci_generic` driver and load `rte_kni` module with carrier=off. 
Then we run the sample application and it seems to be normal. 
`ip addr show` prints: 
Finally the IP, netmask and gw are added to the veth. 
The veth is up but it is not running, and **we cannot perform a remote ping**. 
My question are as follows:
1. What else need to be configured such that we could remote ping the DPDK-captured NIC?
2. Is it possible to set the IP of DPDK-captured NIC? I found that MAC\MTU could be configured but I do not find the method to configure IP. 
Best wishes,
Qiwen Lee

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