[ovs-discuss] Thoughts on gratuitous ARP

[Miguel Angel Ajo Pelayo]

We're finding that sometimes reused floating IP addresses
won't be reachable, for some reason. And I remembered that,
we found the same issue once for the reference
solution once, it was fixed here: [1]

Basically because the linux kernel, under some conditions will
ignore the gARP requests, and reset a timeout value that would
keep ignoring those requests. But if it received a REPLY
packet instead, it worked.

I believe that we may want to do the same in ovn controller.

[1]
https://github.com/openstack/neutron/commit/82831b9d8d4bd61f90610df9eca8c7f6e447f8d8
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