On Mon, Mar 26, 2012 at 05:10:15PM -0500, Anthony Liguori wrote: > On 03/16/2012 03:54 AM, Jason Wang wrote: > >This an update of series that let guest and qemu to be co-operated to > >send gratuitous packets when needed such as after migration, loadvm > >and continuing. > > > >As it's hard for qemu to track the network configuration in guest such > >as bondings, vlans or ipv6. So current gratuitous may not work under > >those situations. > > Can you be more specific about the failure scenarios? > > Does this mean that migration cannot work today with guests using > ipv6? I don't think just pushing this to the guest is an acceptable > solution in the short term. > > Are there scenarios we cannot handle no matter what in the host?
Consider a nested virt scenario. It seems clear that you either must notify the guest about migration, or learn nested guest macs. > Does this mean that for emulated drivers, we're completely out of > luck? > > Regards, > > Anthony Liguori For these, I think we can cause announcements by sending link up event to the guest. -- MST
