Hi Tonghao, Got it. Thanks for the information. It is exactly what I need to know.
Eric On Thu, Jan 14, 2021 at 11:52 PM Tonghao Zhang <[email protected]> wrote: > On Fri, Jan 15, 2021 at 7:31 AM Eric Li <[email protected]> wrote: > > > > Hi All, > > > > We have a setup with br-int and br-tun similar to openstack setup. Using > an > > openflow rule to forward a vxlan tunnelled packet to another machine, we > > set the exact destination IP and destination mac under a group rule. > > > > We are seeing ARP requests for the destination IP unexpectedly. I don't > > think OVS is sending those ARP requests, so it would be some linux > network > > stack that decided to ARP the destination IP even though the destination > > mac is already in the packet header. > > > > Questions are: > > > > 1. Who trigger this unneeded ARP request? > When OvS tries to send tunnel packets, OvS will use the arp, if there > is no arp, request it. > > 2. Can we disable this behavior? > I add a feature, then OvS can learn arp from linux kernel. In other > words, we disable it ? > http://patchwork.ozlabs.org/project/openvswitch/list/?series=220295 > > Thanks, > > Eric > > _______________________________________________ > > dev mailing list > > [email protected] > > https://mail.openvswitch.org/mailman/listinfo/ovs-dev > > > > -- > Best regards, Tonghao > _______________________________________________ dev mailing list [email protected] https://mail.openvswitch.org/mailman/listinfo/ovs-dev
