[dpdk-dev] [PATCH 0/4 for 2.3] vhost-user live migration support

[Pavel Fedin]

 Hello!

> > I _guess_ the problem for ping might be: guest ARP entry for
> > 192.168.100.1 is not updated. Or say, after guest migrated to host2
> > from host1, guest is still trying to send packet to host1's NIC (no
> > one is telling it to update, right?), so no one is responding the
> > ping. When the entry is expired, guest will resend the ARP request,
> > and host2 will respond this time, with mac address on host2 provided
> > this time. After that, ping works again.
> 
> Peter,
> 
> Thanks for your input, and that sounds reasonable. You just reminded
> me that the host1's NIC is indeed different with host2's NIC: the ovs
> bridge mac address is different.

 Yes, this is indeed what is happening, and actually i already wrote about it. In wireshark it looks exactly like that: the some
PINGs are sent without replies, then the guest redoes ARP, PING replies resume.

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