vec_add1(sm->workers, i);
sm->per_thread_data[sm->first_worker_index + i].snat_thread_index = j;
sm->per_thread_data[sm->first_worker_index + i].thread_index = i;
j++;
vec_add1(sm->workers, i);
sm->per_thread_data[sm->first_worker_index + i].snat_thread_index = j;
sm->per_thread_data[sm->first_worker_index + i].thread_index = i;
j++;