[Xen-users] Xen live migration: from where is the ARP sent?

[Virajith Jalaparti <virajith.j@xxxxxxxxx>]

Hi,

I was hoping someone could help me out with a question I had about the 
live migration of Xen.
I am trying to perform live migration of a VM using Xen 3.4.3. When 
paravirtualization is used, a gratuitous arp is sent out after the VM is 
restored at the new location (I did not find such an arp being sent when 
the VM is fully virtualized). Is this arp sent out by xen (the 
hypervisor) or the modified operating system? If the arp is sent by xen, 
which part of the xen code (which file?) actually sends out this arp? If 
the arp is not sent by xen, is it possible to send an arp from xen 
rather than the OS? I think we would require to know the IP address and 
the MAC address of the VM for this purpose.
Thanks,
Virajith

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