This question is related to my previous
double NATing thread (see that thread for details).
If I ping any host in outer network from virtual machine that has different gateway than it's own hypervisor, packets gets duplicated somewhere on hypervisor.
This happens only on exactly one hypervisor still using linux bonding with linux bridges, on other machines with openvswitch (handles bonding and bridging) there's no packet duplication.
Can anyone tell why is this happening?