Hi, I was hit by the same bug. I have also a "bonding-vlan-bridge" setup.
After installing linux-image-2.6.32-5-amd64_2.6.32-18_amd64.deb (and linux-base_2.6.32-18_all.deb) from unstable the "NULL pointer dereference" is gone. Thank you for the good work :-) -- greetings eMHa
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