Invalid Argument when adding a bond to a bridge

  

Hi All, 

I need some help figuring this one out... Whenever I try
to add a bond to a bridge, I get back an invalid argument error. I've
confirmed this on 3.2-rc6, 3.1.5, 3.0.13, and 2.6.39.4 (haven't checked
earlier kernels). 

Here's my setup: 32bit KVM virtual machine with no
network cards (... -net none ... ). 

I created the bond with: echo "+x"

/sys/class/net/bonding_masters 

I created the bridge with: brctl
addbr b 

I try to add the bond to the bridge with: brctl addif b x 

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Thanks,
Dyweni