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

[Louis Bouchard]

Following your suggestions, I modified my /etc/network/interfaces &
added the STP options to my test environment.  Following that, I am now
able to ping to the remote system using the following bonding modes :

* 802.3ad (4)
* tlb (5)
* alb (6)

For unknown reasons, I'm still unable to use balance-rr unlike your
setup.  But that might not be much of an issue as those modes listed
above might be sufficient. I must go & check that.  And now, the two VMs
are able to ping each other.

One thing regarding your listed /etc/network/interfaces : I think that
there is a typo as 'bond_mode active-rr' is not a support bonding mode.

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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