nbns_rq_send
error = nbns_rq_send(rqp, rqp->nr_dest.s_addr);
error = nbns_rq_send(rqp, ctx->nb_wins1);
error = nbns_rq_send(rqp, ctx->nb_wins2);
error = nbns_rq_send(rqp, INADDR_BROADCAST);