[ovs-dev] [PATCH RFC 0/3] - send garp on localnet

Ramu Ramamurthy ramu.ramamurthy at gmail.com
Thu Mar 31 22:02:22 UTC 2016


>
> Why did you choose to use reply packets ?
>
> request packets are less likely to be rejected by external networks
> and I think thats discussed in the RFC
>
>

I wanted to use the GARP request, but found a problem.

OVN currently programs flows to respond to gratuitous arp requests from VMs,
Such flows also respond to ARP probes from VMs. This behavior needs to
change so that OVN must not respond to GARP requests or ARP probes.
It must flood them. This change is a work in progress.
In fact, some DHCP clients send ARP probes after the DHCP ACK to
verify no address collisions, and upon seeing ARP probe response will decline
dhcp offered IP.

As soon as the above problem is fixed, I can update the code to
generate GARP requests.



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