UBSEC_RNG_BUFSIZ
i = UBSEC_RNG_BUFSIZ * sizeof(u_int32_t);
mcr->mcr_opktbuf.pb_len = htole32(((sizeof(u_int32_t) * UBSEC_RNG_BUFSIZ)) &
UBSEC_RNG_BUFSIZ, &sc->sc_rng.rng_buf, 0)) {