533     ccp_options *go = &ccp_gotoptions[f->unit];  local
536     *go = ccp_wantoptions[f->unit];
540     if (go->mppe) {
587 	    if (go->mppe & MPPE_OPT_40) {
589 		go->mppe &= ~MPPE_OPT_40;
595 	if (!(go->mppe & (MPPE_OPT_40 | MPPE_OPT_128))) {
603 	ao->mppe = go->mppe;
605 	ao->bsd_compress = go->bsd_compress = 0;
606 	ao->predictor_1  = go->predictor_1  = 0;
607 	ao->predictor_2  = go->predictor_2  = 0;
608 	ao->deflate      = go->deflate      = 0;
617     if (go->mppe) {
620 	MPPE_OPTS_TO_CI(go->mppe, &opt_buf[2]);
628     if (go->bsd_compress) {
633 	    go->bsd_compress = 0;
635     if (go->deflate) {
636 	if (go->deflate_correct) {
642 		go->deflate_correct = 0;
644 	if (go->deflate_draft) {
650 		go->deflate_draft = 0;
652 	if (!go->deflate_correct && !go->deflate_draft)
653 	    go->deflate = 0;
655     if (go->predictor_1) {
659 	    go->predictor_1 = 0;
661     if (go->predictor_2) {
665 	    go->predictor_2 = 0;
676     ccp_options *go = &ccp_gotoptions[f->unit];  local
678     return (go->bsd_compress? CILEN_BSD_COMPRESS: 0)
679 	+ (go->deflate? CILEN_DEFLATE: 0)
680 	+ (go->predictor_1? CILEN_PREDICTOR_1: 0)
681 	+ (go->predictor_2? CILEN_PREDICTOR_2: 0)
682 	+ (go->mppe? CILEN_MPPE: 0);
695     ccp_options *go = &ccp_gotoptions[f->unit];  local
704     if (go->mppe) {
709 	MPPE_OPTS_TO_CI(go->mppe, &p[2]);
710 	MPPE_OPTS_TO_CI(go->mppe, &opt_buf[2]);
720     if (go->deflate) {
721 	p[0] = go->deflate_correct? CI_DEFLATE: CI_DEFLATE_DRAFT;
723 	p[2] = DEFLATE_MAKE_OPT(go->deflate_size);
729 		if (go->deflate_size < DEFLATE_MIN_WORKS) {
730 		    go->deflate = 0;
738 		    go->deflate = 0;
741 		--go->deflate_size;
742 		p[2] = DEFLATE_MAKE_OPT(go->deflate_size);
745 	if (p != p0 && go->deflate_correct && go->deflate_draft) {
753     if (go->bsd_compress) {
756 	p[2] = BSD_MAKE_OPT(BSD_CURRENT_VERSION, go->bsd_bits);
761 		if (go->bsd_bits < BSD_MIN_BITS) {
762 		    go->bsd_compress = 0;
770 		    go->bsd_compress = 0;
773 		--go->bsd_bits;
774 		p[2] = BSD_MAKE_OPT(BSD_CURRENT_VERSION, go->bsd_bits);
779     if (go->predictor_1) {
783 	    go->predictor_1 = 0;
788     if (go->predictor_2) {
792 	    go->predictor_2 = 0;
798     go->method = (p > p0)? p0[0]: -1;
813     ccp_options *go = &ccp_gotoptions[f->unit];  local
817     if (go->mppe) {
822 	MPPE_OPTS_TO_CI(go->mppe, &opt_buf[2]);
832     if (go->deflate) {
834 	    || p[0] != (go->deflate_correct? CI_DEFLATE: CI_DEFLATE_DRAFT)
836 	    || p[2] != DEFLATE_MAKE_OPT(go->deflate_size)
844 	if (go->deflate_correct && go->deflate_draft) {
848 		|| p[2] != DEFLATE_MAKE_OPT(go->deflate_size)
855     if (go->bsd_compress) {
858 	    || p[2] != BSD_MAKE_OPT(BSD_CURRENT_VERSION, go->bsd_bits))
866     if (go->predictor_1) {
876     if (go->predictor_2) {
903     ccp_options *go = &ccp_gotoptions[f->unit];  local
908     try = *go;
911     if (go->mppe && len >= CILEN_MPPE
922 	} else if (((go->mppe | MPPE_OPT_STATEFUL) & try.mppe) != try.mppe) {
933     if (go->deflate && len >= CILEN_DEFLATE
934 	&& p[0] == (go->deflate_correct? CI_DEFLATE: CI_DEFLATE_DRAFT)
945 	else if (DEFLATE_SIZE(p[2]) < go->deflate_size)
949 	if (go->deflate_correct && go->deflate_draft
957     if (go->bsd_compress && len >= CILEN_BSD_COMPRESS
966 	else if (BSD_NBITS(p[2]) < go->bsd_bits)
979 	*go = try;
992     ccp_options *go = &ccp_gotoptions[f->unit];  local
995     try = *go;
1005     if (go->mppe && len >= CILEN_MPPE
1013     if (go->deflate_correct && len >= CILEN_DEFLATE
1015 	if (p[2] != DEFLATE_MAKE_OPT(go->deflate_size)
1022     if (go->deflate_draft && len >= CILEN_DEFLATE
1024 	if (p[2] != DEFLATE_MAKE_OPT(go->deflate_size)
1033     if (go->bsd_compress && len >= CILEN_BSD_COMPRESS
1035 	if (p[2] != BSD_MAKE_OPT(BSD_CURRENT_VERSION, go->bsd_bits))
1041     if (go->predictor_1 && len >= CILEN_PREDICTOR_1
1047     if (go->predictor_2 && len >= CILEN_PREDICTOR_2
1058 	*go = try;
1428     ccp_options *go = &ccp_gotoptions[f->unit];  local
1433     if (ANY_COMPRESS(*go)) {
1435 	    if (go->method == ho->method) {
1436 		notice("%s compression enabled", method_name(go, ho));
1438 		strlcpy(method1, method_name(go, NULL), sizeof(method1));
1443 	    notice("%s receive compression enabled", method_name(go, NULL));
1447     if (go->mppe) {