gb->gb_vni_sw_if_index = gt->gt_sw_if_index;
/* set it up as a GBP interface */
gt->gt_itf = gbp_itf_add_and_lock (gt->gt_sw_if_index,
gb->gb_vni_sw_if_index = gt->gt_sw_if_index;
/* set it up as a GBP interface */
gt->gt_itf = gbp_itf_add_and_lock (gt->gt_sw_if_index,