[Bug 785668] Re: bonding inside a bridge does not update ARP correctly when bridged net accessed from within a VM

[Serge Hallyn]

I'm setting up networking as described above, and then starting virtual
machines with:

sudo tunctl -u 1000 -g 1000 -t tap0
sudo /sbin/ifconfig $1 0.0.0.0 up
sudo brctl addif br0 tap0

kvm -drive file=disk.img,if=virtio,cache=none,boot=on -m 1024 -vnc :1
-net nic,model=virtio -net tap,script=no,ifname=tap0,downscript=no

With mode=balance-rr, I can't run dhclient from the guest.  With either
bond0 as active-backup, or without bond0 (with eth0 directly in br0),
I can.

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https://bugs.launchpad.net/bugs/785668

Title:
  bonding inside a bridge does not update ARP correctly when bridged net
  accessed from within a VM