Hi Jinlei, Could you please send me a pcap capture of the grat-arp that VPP receives. Then I can duplicate the case in the UT.
Thanks, neale From: <vpp-dev@lists.fd.io> on behalf of Jinlei Li <liefeng...@163.com> Date: Saturday 19 September 2020 at 11:56 To: "vpp-dev@lists.fd.io" <vpp-dev@lists.fd.io> Subject: [vpp-dev] The gratuitous ARP issue Hi guys, During my test environment, I have two physical interfaces in the same broadcast domain, and they are configured with IPs of different subnet. [cid:image001.png@01D69035.D064C620] I tried to ping 10.161.26.23 first, and I can see its’s mac address by “show ip neighbor” [cid:image002.png@01D69035.D064C620] But if 10.161.26.23 send a gratuitous ARP broadcast, the other interface can also see this item(like the following picture). I think this is not expected, and I tried same scenario on linux, this arp item will not be seen on another interface. [cid:image003.png@01D69035.D064C620] I find This problem occurs on both v20.01 and v20.05. Can any one help to check this issue? Regards Jinlei
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