The pos returned is just the offset of the slab. You need to use this to offset the bits in the slab. Fixes: c771e4ef38 ("net/bonding: enable slave VLAN filter") Cc: stable@dpdk.org Signed-off-by: Chas Williams <chas3@att.com> Acked-by: Radu Nicolau <radu.nicolau@intel.com>