Hello!

> When doing the ping, was it from the guest (to another host) or to
> the guest (from another host)?
> 
> In any case, I still could not understand why the ping loss happened
> in this test.
> 
> If ping from guest, no ARP refresh is required at all?

 ping from guest to host.

 Ok, my setup was:

Host<------->openVSwitch<----------->guest
      LOCAL               vhostuser

 So, in order to migrate the guest, i simply replicated this setup on both 
hosts, with the same IPs on host side. And on both hosts i set up the following 
ruleset for openvswitch:

ovs-ofctl add-flow ovs-br0 in_port=1,actions=output:LOCAL
ovs-ofctl add-flow ovs-br0 in_port=LOCAL,actions=output:1

 And on the second host, for some reason, vhostuser port got no 2 in the 
database instead of 1. Probably because first i added wrong port, then added 
correct one, then removed the wrong one. So, as i wrote before - please don't 
worry, the patch works fine, it was totally my lame fault.

Kind regards,
Pavel Fedin
Expert Engineer
Samsung Electronics Research center Russia


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