534     u_char opt_buf[CCP_MAX_OPTION_LENGTH];  local
618 	opt_buf[0] = CI_MPPE;
619 	opt_buf[1] = CILEN_MPPE;
620 	MPPE_OPTS_TO_CI(go->mppe, &opt_buf[2]);
622 	if (ccp_test(f->unit, opt_buf, CILEN_MPPE + MPPE_MAX_KEY_LEN, 0) <= 0) {
629 	opt_buf[0] = CI_BSD_COMPRESS;
630 	opt_buf[1] = CILEN_BSD_COMPRESS;
631 	opt_buf[2] = BSD_MAKE_OPT(BSD_CURRENT_VERSION, BSD_MIN_BITS);
632 	if (ccp_test(f->unit, opt_buf, CILEN_BSD_COMPRESS, 0) <= 0)
637 	    opt_buf[0] = CI_DEFLATE;
638 	    opt_buf[1] = CILEN_DEFLATE;
639 	    opt_buf[2] = DEFLATE_MAKE_OPT(DEFLATE_MIN_WORKS);
640 	    opt_buf[3] = DEFLATE_CHK_SEQUENCE;
641 	    if (ccp_test(f->unit, opt_buf, CILEN_DEFLATE, 0) <= 0)
645 	    opt_buf[0] = CI_DEFLATE_DRAFT;
646 	    opt_buf[1] = CILEN_DEFLATE;
647 	    opt_buf[2] = DEFLATE_MAKE_OPT(DEFLATE_MIN_WORKS);
648 	    opt_buf[3] = DEFLATE_CHK_SEQUENCE;
649 	    if (ccp_test(f->unit, opt_buf, CILEN_DEFLATE, 0) <= 0)
656 	opt_buf[0] = CI_PREDICTOR_1;
657 	opt_buf[1] = CILEN_PREDICTOR_1;
658 	if (ccp_test(f->unit, opt_buf, CILEN_PREDICTOR_1, 0) <= 0)
662 	opt_buf[0] = CI_PREDICTOR_2;
663 	opt_buf[1] = CILEN_PREDICTOR_2;
664 	if (ccp_test(f->unit, opt_buf, CILEN_PREDICTOR_2, 0) <= 0)
705 	u_char opt_buf[CILEN_MPPE + MPPE_MAX_KEY_LEN];  local
707 	p[0] = opt_buf[0] = CI_MPPE;
708 	p[1] = opt_buf[1] = CILEN_MPPE;
710 	MPPE_OPTS_TO_CI(go->mppe, &opt_buf[2]);
711 	BCOPY(mppe_recv_key, &opt_buf[CILEN_MPPE], MPPE_MAX_KEY_LEN);
712 	res = ccp_test(f->unit, opt_buf, CILEN_MPPE + MPPE_MAX_KEY_LEN, 0);
818 	u_char opt_buf[CILEN_MPPE];  local
820 	opt_buf[0] = CI_MPPE;
821 	opt_buf[1] = CILEN_MPPE;
822 	MPPE_OPTS_TO_CI(go->mppe, &opt_buf[2]);
823 	if (len < CILEN_MPPE || memcmp(opt_buf, p, CILEN_MPPE))
1172 		    u_char opt_buf[CILEN_MPPE + MPPE_MAX_KEY_LEN];  local
1175 		    BCOPY(p, opt_buf, CILEN_MPPE);
1176 		    BCOPY(mppe_send_key, &opt_buf[CILEN_MPPE],
1178 		    if (ccp_test(f->unit, opt_buf,