diff --git a/blockcheck.sh b/blockcheck.sh
index ed0ed243..e7025e3e 100755
--- a/blockcheck.sh
+++ b/blockcheck.sh
@@ -668,7 +668,7 @@ curl_with_dig()
 	# $2 - domain name
 	# $3 - port
 	# $4+ - curl params
-	local dom=$2 port=$3
+	local dom="$2" port=$3
 	local sdom suri ip
 
 	split_by_separator "$dom" / sdom suri
@@ -687,12 +687,12 @@ curl_probe()
 	# $3 - port
 	# $4 - subst ip
 	# $5+ - curl params
-	local ipv=$1 dom=$2 port=$3 subst=$4
+	local ipv=$1 dom="$2" port=$3 subst=$4
 	shift; shift; shift; shift
 	if [ -n "$subst" ]; then
-		curl_with_subst_ip $dom $port $subst "$@"
+		curl_with_subst_ip "$dom" $port $subst "$@"
 	else
-		curl_with_dig $ipv $dom $port "$@"
+		curl_with_dig $ipv "$dom" $port "$@"
 	fi
 }
 curl_test_http()
@@ -702,8 +702,8 @@ curl_test_http()
 	# $3 - subst ip
 	# $4 - "detail" - detail info
 
-	local code loc hdrt="${HDRTEMP}_${!:-$$}.txt"
-	curl_probe $1 $2 $HTTP_PORT "$3" -SsD "$hdrt" -A "$USER_AGENT" --max-time $CURL_MAX_TIME $CURL_OPT "http://$2" -o /dev/null 2>&1 || {
+	local code loc hdrt="${HDRTEMP}_${!:-$$}.txt" dom="$(tolower "$2")"
+	curl_probe $1 "$2" $HTTP_PORT "$3" -SsD "$hdrt" -A "$USER_AGENT" --max-time $CURL_MAX_TIME $CURL_OPT "http://$2" -o /dev/null 2>&1 || {
 		code=$?
 		rm -f "$hdrt"
 		return $code
@@ -715,8 +715,9 @@ curl_test_http()
 		code=$(hdrfile_http_code "$hdrt")
 		[ "$code" = 301 -o "$code" = 302 -o "$code" = 307 -o "$code" = 308 ] && {
 			loc=$(hdrfile_location "$hdrt")
-			echo "$loc" | grep -qE "^https?://.*$2(/|$)" ||
-			echo "$loc" | grep -vqE '^https?://' || {
+			split_by_separator "$dom" / dom
+			tolower "$loc" | grep -qE "^https?://.*$dom(/|$)" ||
+			tolower "$loc" | grep -vqE '^https?://' || {
 				echo suspicious redirection $code to : $loc
 				rm -f "$hdrt"
 				return 254
@@ -1079,7 +1080,7 @@ ws_curl_test()
 	# $2 - test function
 	# $3 - domain
 	# $4,$5,$6, ... - ws params
-	local code ws_start=$1 testf=$2 dom=$3
+	local code ws_start=$1 testf=$2 dom="$3"
 
 	[ "$SIMULATE" = 1 ] && {
 		n=$(random 0 99)
@@ -1095,7 +1096,7 @@ ws_curl_test()
 	shift
 	shift
 	$ws_start "$@"
-	curl_test $testf $dom
+	curl_test $testf "$dom"
 	code=$?
 	ws_kill
 	return $code
@@ -1108,7 +1109,7 @@ tpws_curl_test()
 	echo - $1 ipv$IPV $2 : tpws $3 $4 $5 $6 $7 $8 $9${TPWS_EXTRA:+ $TPWS_EXTRA}${TPWS_EXTRA_1:+ "$TPWS_EXTRA_1"}${TPWS_EXTRA_2:+ "$TPWS_EXTRA_2"}${TPWS_EXTRA_3:+ "$TPWS_EXTRA_3"}${TPWS_EXTRA_4:+ "$TPWS_EXTRA_4"}${TPWS_EXTRA_5:+ "$TPWS_EXTRA_5"}${TPWS_EXTRA_6:+ "$TPWS_EXTRA_6"}${TPWS_EXTRA_7:+ "$TPWS_EXTRA_7"}${TPWS_EXTRA_8:+ "$TPWS_EXTRA_8"}${TPWS_EXTRA_9:+ "$TPWS_EXTRA_9"}
 	local ALL_PROXY="socks5://127.0.0.1:$SOCKS_PORT"
 	ws_curl_test tpws_start "$@"${TPWS_EXTRA:+ $TPWS_EXTRA}${TPWS_EXTRA_1:+ "$TPWS_EXTRA_1"}${TPWS_EXTRA_2:+ "$TPWS_EXTRA_2"}${TPWS_EXTRA_3:+ "$TPWS_EXTRA_3"}${TPWS_EXTRA_4:+ "$TPWS_EXTRA_4"}${TPWS_EXTRA_5:+ "$TPWS_EXTRA_5"}${TPWS_EXTRA_6:+ "$TPWS_EXTRA_6"}${TPWS_EXTRA_7:+ "$TPWS_EXTRA_7"}${TPWS_EXTRA_8:+ "$TPWS_EXTRA_8"}${TPWS_EXTRA_9:+ "$TPWS_EXTRA_9"}
-	local testf=$1 dom=$2 strategy code=$?
+	local testf=$1 dom="$2" strategy code=$?
 	[ "$code" = 0 ] && {
 		shift; shift;
 		strategy="$@"
@@ -1122,11 +1123,11 @@ pktws_curl_test()
 	# $1 - test function
 	# $2 - domain
 	# $3,$4,$5, ... - nfqws/dvtws params
-	local testf=$1 dom=$2 strategy code
+	local testf=$1 dom="$2" strategy code
 
 	shift; shift;
 	echo - $testf ipv$IPV $dom : $PKTWSD ${WF:+$WF }${PKTWS_EXTRA_PRE:+$PKTWS_EXTRA_PRE }${PKTWS_EXTRA_PRE_1:+"$PKTWS_EXTRA_PRE_1" }${PKTWS_EXTRA_PRE_2:+"$PKTWS_EXTRA_PRE_2" }${PKTWS_EXTRA_PRE_3:+"$PKTWS_EXTRA_PRE_3" }${PKTWS_EXTRA_PRE_4:+"$PKTWS_EXTRA_PRE_4" }${PKTWS_EXTRA_PRE_5:+"$PKTWS_EXTRA_PRE_5" }${PKTWS_EXTRA_PRE_6:+"$PKTWS_EXTRA_PRE_6" }${PKTWS_EXTRA_PRE_7:+"$PKTWS_EXTRA_PRE_7" }${PKTWS_EXTRA_PRE_8:+"$PKTWS_EXTRA_PRE_8" }${PKTWS_EXTRA_PRE_9:+"$PKTWS_EXTRA_PRE_9" }$@${PKTWS_EXTRA:+ $PKTWS_EXTRA}${PKTWS_EXTRA_1:+ "$PKTWS_EXTRA_1"}${PKTWS_EXTRA_2:+ "$PKTWS_EXTRA_2"}${PKTWS_EXTRA_3:+ "$PKTWS_EXTRA_3"}${PKTWS_EXTRA_4:+ "$PKTWS_EXTRA_4"}${PKTWS_EXTRA_5:+ "$PKTWS_EXTRA_5"}${PKTWS_EXTRA_6:+ "$PKTWS_EXTRA_6"}${PKTWS_EXTRA_7:+ "$PKTWS_EXTRA_7"}${PKTWS_EXTRA_8:+ "$PKTWS_EXTRA_8"}${PKTWS_EXTRA_9:+ "$PKTWS_EXTRA_9"}
-	ws_curl_test pktws_start $testf $dom ${PKTWS_EXTRA_PRE:+$PKTWS_EXTRA_PRE }${PKTWS_EXTRA_PRE_1:+"$PKTWS_EXTRA_PRE_1" }${PKTWS_EXTRA_PRE_2:+"$PKTWS_EXTRA_PRE_2" }${PKTWS_EXTRA_PRE_3:+"$PKTWS_EXTRA_PRE_3" }${PKTWS_EXTRA_PRE_4:+"$PKTWS_EXTRA_PRE_4" }${PKTWS_EXTRA_PRE_5:+"$PKTWS_EXTRA_PRE_5" }${PKTWS_EXTRA_PRE_6:+"$PKTWS_EXTRA_PRE_6" }${PKTWS_EXTRA_PRE_7:+"$PKTWS_EXTRA_PRE_7" }${PKTWS_EXTRA_PRE_8:+"$PKTWS_EXTRA_PRE_8" }${PKTWS_EXTRA_PRE_9:+"$PKTWS_EXTRA_PRE_9" }"$@"${PKTWS_EXTRA:+ $PKTWS_EXTRA}${PKTWS_EXTRA_1:+ "$PKTWS_EXTRA_1"}${PKTWS_EXTRA_2:+ "$PKTWS_EXTRA_2"}${PKTWS_EXTRA_3:+ "$PKTWS_EXTRA_3"}${PKTWS_EXTRA_4:+ "$PKTWS_EXTRA_4"}${PKTWS_EXTRA_5:+ "$PKTWS_EXTRA_5"}${PKTWS_EXTRA_6:+ "$PKTWS_EXTRA_6"}${PKTWS_EXTRA_7:+ "$PKTWS_EXTRA_7"}${PKTWS_EXTRA_8:+ "$PKTWS_EXTRA_8"}${PKTWS_EXTRA_9:+ "$PKTWS_EXTRA_9"}
+	ws_curl_test pktws_start $testf "$dom" ${PKTWS_EXTRA_PRE:+$PKTWS_EXTRA_PRE }${PKTWS_EXTRA_PRE_1:+"$PKTWS_EXTRA_PRE_1" }${PKTWS_EXTRA_PRE_2:+"$PKTWS_EXTRA_PRE_2" }${PKTWS_EXTRA_PRE_3:+"$PKTWS_EXTRA_PRE_3" }${PKTWS_EXTRA_PRE_4:+"$PKTWS_EXTRA_PRE_4" }${PKTWS_EXTRA_PRE_5:+"$PKTWS_EXTRA_PRE_5" }${PKTWS_EXTRA_PRE_6:+"$PKTWS_EXTRA_PRE_6" }${PKTWS_EXTRA_PRE_7:+"$PKTWS_EXTRA_PRE_7" }${PKTWS_EXTRA_PRE_8:+"$PKTWS_EXTRA_PRE_8" }${PKTWS_EXTRA_PRE_9:+"$PKTWS_EXTRA_PRE_9" }"$@"${PKTWS_EXTRA:+ $PKTWS_EXTRA}${PKTWS_EXTRA_1:+ "$PKTWS_EXTRA_1"}${PKTWS_EXTRA_2:+ "$PKTWS_EXTRA_2"}${PKTWS_EXTRA_3:+ "$PKTWS_EXTRA_3"}${PKTWS_EXTRA_4:+ "$PKTWS_EXTRA_4"}${PKTWS_EXTRA_5:+ "$PKTWS_EXTRA_5"}${PKTWS_EXTRA_6:+ "$PKTWS_EXTRA_6"}${PKTWS_EXTRA_7:+ "$PKTWS_EXTRA_7"}${PKTWS_EXTRA_8:+ "$PKTWS_EXTRA_8"}${PKTWS_EXTRA_9:+ "$PKTWS_EXTRA_9"}
 
 	code=$?
 	[ "$code" = 0 ] && {
@@ -1152,11 +1153,11 @@ xxxws_curl_test_update()
 	# $2 - test function
 	# $3 - domain
 	# $4,$5,$6, ... - nfqws/dvtws params
-	local code xxxf=$1 testf=$2 dom=$3
+	local code xxxf=$1 testf=$2 dom="$3"
 	shift
 	shift
 	shift
-	$xxxf $testf $dom "$@"
+	$xxxf $testf "$dom" "$@"
 	code=$?
 	[ $code = 0 ] && strategy="${strategy:-$@}"
 	return $code
@@ -1317,13 +1318,13 @@ pktws_curl_test_update_vary()
 		[ "$fake" = "-" ] && continue
 		if [ -n "$splits" ]; then
 			for pos in $splits ; do
-				pktws_curl_test_update $testf $domain --dpi-desync=$desync "$@" --dpi-desync-split-pos=$pos $fake && {
+				pktws_curl_test_update $testf "$domain" --dpi-desync=$desync "$@" --dpi-desync-split-pos=$pos $fake && {
 					[ "$SCANLEVEL" = force ] || return 0
 					ret=0
 				}
 			done
 		else
-			pktws_curl_test_update $testf $domain --dpi-desync=$desync "$@" $fake && {
+			pktws_curl_test_update $testf "$domain" --dpi-desync=$desync "$@" $fake && {
 				[ "$SCANLEVEL" = force ] || return 0
 				ret=0
 			}
@@ -1572,7 +1573,7 @@ pktws_check_domain_http3_bypass_()
 
 	for fake in '' "--dpi-desync-fake-quic=$ZAPRET_BASE/files/fake/quic_initial_www_google_com.bin"; do
 		for rep in '' 2 5 10 20; do
-			pktws_curl_test_update $1 $2 --dpi-desync=fake ${fake:+$fake }${rep:+--dpi-desync-repeats=$rep} && [ "$SCANLEVEL" != force ] && {
+			pktws_curl_test_update $1 $2 --dpi-desync=fake ${fake:+"$fake" }${rep:+--dpi-desync-repeats=$rep} && [ "$SCANLEVEL" != force ] && {
 				[ "$SCANLEVEL" = quick ] && return
 				break
 			}
@@ -1698,7 +1699,7 @@ check_dpi_ip_block()
 	# $1 - test function
 	# $2 - domain
 
-	local blocked_dom=$2
+	local blocked_dom="$2"
 	local blocked_ip blocked_ips unblocked_ip
 
 	echo 
@@ -2188,7 +2189,7 @@ check_dns_()
 	if find_working_public_dns ; then
 		echo comparing system resolver to public DNS : $PUBDNS
 		for dom in $DNSCHECK_DOM; do
-			if check_dns_spoof $dom $PUBDNS ; then
+			if check_dns_spoof "$dom" $PUBDNS ; then
 				echo $dom : MISMATCH
 				echo -- system resolver :
 				cat "$DNSCHECK_DIG1"
diff --git a/common/base.sh b/common/base.sh
index ece185e6..bba049f9 100644
--- a/common/base.sh
+++ b/common/base.sh
@@ -109,6 +109,10 @@ split_by_separator()
 	[ -n "$3" ] && eval $3="\$before"
 	[ -n "$4" ] && eval $4="\$after"
 }
+tolower()
+{
+	echo "$@" | tr 'A-Z' 'a-z'
+}
 
 dir_is_not_empty()
 {
diff --git a/common/dialog.sh b/common/dialog.sh
index 44f78c41..ec1c9aa2 100644
--- a/common/dialog.sh
+++ b/common/dialog.sh
@@ -36,11 +36,11 @@ ask_list()
 	# $3 - (optional) default value
 	local M_DEFAULT
 	eval M_DEFAULT="\$$1"
-	local M_ALL=$M_DEFAULT
+	local M_DEFAULT_VAR="$M_DEFAULT"
 	local M="" m
-	
+
 	[ -n "$3" ] && { find_str_in_list "$M_DEFAULT" "$2" || M_DEFAULT="$3" ;}
-	
+
 	n=1
 	for m in $2; do
 		echo $n : $m
@@ -52,6 +52,6 @@ ask_list()
 	[ -z "$M" ] && M="$M_DEFAULT"
 	echo selected : $M
 	eval $1="\"$M\""
-	
-	[ "$M" != "$M_DEFAULT" ]
+
+	[ "$M" != "$M_DEFAULT_VAR" ]
 }
diff --git a/common/installer.sh b/common/installer.sh
index 453a70ad..574838fe 100644
--- a/common/installer.sh
+++ b/common/installer.sh
@@ -827,7 +827,9 @@ select_fwtype()
 		echo WARNING ! if you need large lists it may be necessary to fall back to iptables+ipset firewall
 	}
 	echo select firewall type :
-	ask_list FWTYPE "iptables nftables" "$FWTYPE" && write_config_var FWTYPE
+	ask_list FWTYPE "iptables nftables" "$FWTYPE"
+	# always write config var to prevent auto discovery every time
+	write_config_var FWTYPE
 }
 
 dry_run_tpws_()
diff --git a/docs/changes.txt b/docs/changes.txt
index a12d0650..d1d54e71 100644
--- a/docs/changes.txt
+++ b/docs/changes.txt
@@ -595,3 +595,8 @@ mdig: --eagain, --eagain-delay
 73.8
 
 nfqws: fix breaking tcp if ts fooling is enabled but no timestamps present
+
+73.9
+
+blockcheck: fix detection of http redirection if domain/URI specified
+install_easy: fix writing of ask_list variables
diff --git a/docs/readme.en.md b/docs/readme.en.md
index 9390e74f..a921c645 100644
--- a/docs/readme.en.md
+++ b/docs/readme.en.md
@@ -207,8 +207,8 @@ nfqws takes the following parameters:
  --dpi-desync-fakedsplit-mod=mod[,mod]                     ; mods can be none,altorder=0|1|2|3 + 0|8|16
  --dpi-desync-hostfakesplit-midhost=marker+N|marker-N      ; additionally split real hostname at specified marker. must be within host..endhost or won't be splitted.
  --dpi-desync-hostfakesplit-mod=mod[,mod]                  ; can be none, host=<hostname>, altorder=0|1
- --dpi-desync-ipfrag-pos-tcp=<8..9216>                     ; ip frag position starting from the transport header. multiple of 8, default 8.
- --dpi-desync-ipfrag-pos-udp=<8..9216>                     ; ip frag position starting from the transport header. multiple of 8, default 32.
+ --dpi-desync-ipfrag-pos-tcp=<8..9216>                     ; ip frag position starting from the transport header. multiple of 8, default 32.
+ --dpi-desync-ipfrag-pos-udp=<8..9216>                     ; ip frag position starting from the transport header. multiple of 8, default 8.
  --dpi-desync-ts-increment=<int|0xHEX>                     ; ts fooling TSval signed increment. default -600000
  --dpi-desync-badseq-increment=<int|0xHEX>                 ; badseq fooling seq signed increment. default -10000
  --dpi-desync-badack-increment=<int|0xHEX>                 ; badseq fooling ackseq signed increment. default -66000
@@ -1724,7 +1724,9 @@ If this is the case then run another script in background and add some delay the
 
 Are welcome here :
 
-USDT `0x3d52Ce15B7Be734c53fc9526ECbAB8267b63d66E`
+USDT ERC `0x3d52Ce15B7Be734c53fc9526ECbAB8267b63d66E` 
+
+USDT TRC `TEzAAtn4VhndqEaAyuCM78xh5W2gCjwWEo`
 
 BTC  `bc1qhqew3mrvp47uk2vevt5sctp7p2x9m7m5kkchve`
 
diff --git a/docs/readme.md b/docs/readme.md
index be590c5d..10eb2b09 100644
--- a/docs/readme.md
+++ b/docs/readme.md
@@ -237,6 +237,8 @@ dvtws, собираемый из тех же исходников (см. [док
 --dpi-desync-fakedsplit-mod=mod[,mod]                     ; может быть none, altorder=0|1|2|3 + 0|8|16
 --dpi-desync-hostfakesplit-midhost=marker+N|marker-N      ; маркер дополнительного разреза сегмента с оригинальным хостом. должен попадать в пределы хоста.
 --dpi-desync-hostfakesplit-mod=mod[,mod]                  ; может быть none, host=<hostname>, altorder=0|1
+--dpi-desync-ipfrag-pos-tcp=<8..9216>                     ; позиция ip фрагментации tcp, начиная с транспортного заголовка. должно быть кратно 8, по умолчанию - 32.
+--dpi-desync-ipfrag-pos-udp=<8..9216>                     ; позиция ip фрагментации udp, начиная с транспортного заголовка. должно быть кратно 8, по умолчанию - 8.
 --dpi-desync-ts-increment=<int|0xHEX>                     ; инкремент TSval для ts. по умолчанию -600000
 --dpi-desync-badseq-increment=<int|0xHEX>                 ; инкремент sequence number для badseq. по умолчанию -10000
 --dpi-desync-badack-increment=<int|0xHEX>                 ; инкремент ack sequence number для badseq. по умолчанию -66000
@@ -2744,7 +2746,9 @@ VPS можно приобрести в множестве мест. Сущест
 
 ## Поддержать разработчика
 
-USDT `0x3d52Ce15B7Be734c53fc9526ECbAB8267b63d66E`
+USDT ERC `0x3d52Ce15B7Be734c53fc9526ECbAB8267b63d66E` 
+
+USDT TRC `TEzAAtn4VhndqEaAyuCM78xh5W2gCjwWEo`
 
 BTC  `bc1qhqew3mrvp47uk2vevt5sctp7p2x9m7m5kkchve`
 
diff --git a/mdig/mdig.c b/mdig/mdig.c
index d5f327a2..f9dc7ab5 100644
--- a/mdig/mdig.c
+++ b/mdig/mdig.c
@@ -80,15 +80,15 @@ static bool dom_valid(char *dom)
 {
 	if (!dom || *dom=='.') return false;
 	for (; *dom; dom++)
-	if (*dom < 0x20 || (*dom & 0x80) || !(*dom == '.' || *dom == '-' || *dom == '_' || (*dom >= '0' && *dom <= '9') || (*dom >= 'a' && *dom <= 'z') || (*dom >= 'A' && *dom <= 'Z')))
-		return false;
+		if (!(*dom == '.' || *dom == '-' || *dom == '_' || (*dom >= '0' && *dom <= '9') || (*dom >= 'a' && *dom <= 'z') || (*dom >= 'A' && *dom <= 'Z')))
+			return false;
 	return true;
 }
 
 static void invalid_domain_beautify(char *dom)
 {
 	for (int i = 0; *dom && i < 64; i++, dom++)
-		if (*dom < 0x20 || *dom<0) *dom = '?';
+		if (*dom < 0x20 || (*dom & 0x80)) *dom = '?';
 	if (*dom) *dom = 0;
 }
 
@@ -220,7 +220,7 @@ static void *t_resolver(void *arg)
 			{
 				if ((family == AF_INET && (glob.family & FAMILY4)) || (family == AF_INET6 && (glob.family & FAMILY6)))
 				{
-					unsigned int mask;
+					unsigned int mask=0;
 					bool mask_needed = false;
 					if (s_mask)
 					{
@@ -436,7 +436,7 @@ int dns_parse_query()
 	_setmode(_fileno(stdin), _O_BINARY);
 #endif
 	l = fread(a,1,sizeof(a),stdin);
-	if (!l || !feof(stdin))
+	if (!l || ferror(stdin))
 	{
 		fprintf(stderr, "could not read DNS reply blob from stdin\n");
 		return 10;
@@ -455,8 +455,8 @@ static void exithelp(void)
 	printf(
 		" --family=<4|6|46>\t\t; ipv4, ipv6, ipv4+ipv6\n"
 		" --threads=<threads_number>\n"
-		" --eagain=<eagain_retries>\t; how many times to retry if EAGAIN received. default %u\n"
-		" --eagain-delay=<ms>\t\t; time in msec to wait between EAGAIN attempts. default %u\n"
+		" --eagain=<eagain_retries>\t; how many times to retry if EAI_AGAIN received. default %u\n"
+		" --eagain-delay=<ms>\t\t; time in msec to wait between EAI_AGAIN attempts. default %u\n"
 		" --verbose\t\t\t; print query progress to stderr\n"
 		" --stats=N\t\t\t; print resolve stats to stderr every N domains\n"
 		" --log-resolved=<file>\t\t; log successfully resolved domains to a file\n"
diff --git a/nfq/darkmagic.c b/nfq/darkmagic.c
index 1acded44..35db0f12 100644
--- a/nfq/darkmagic.c
+++ b/nfq/darkmagic.c
@@ -928,6 +928,7 @@ void proto_skip_ipv6(uint8_t **data, size_t *len, uint8_t *proto_type, uint8_t *
 	if (proto_type) *proto_type = 0; // put error in advance
 
 	HeaderType = (*data)[6]; // NextHeader field
+	if (proto_type) *proto_type = HeaderType;
 	if (last_header_type) *last_header_type = (*data)+6;
 	*data += 40; *len -= 40; // skip ipv6 base header
 	while (*len > 0) // need at least one byte for NextHeader field
diff --git a/nfq/nfqws.c b/nfq/nfqws.c
index 78b278af..b648958c 100644
--- a/nfq/nfqws.c
+++ b/nfq/nfqws.c
@@ -2014,8 +2014,8 @@ static void exithelp(void)
 		" --dpi-desync-fakedsplit-mod=mod[,mod]\t\t\t; mods can be none,altorder=0|1|2|3 + 0|8|16\n"
 		" --dpi-desync-hostfakesplit-midhost=marker+N|marker-N\t; additionally split real hostname at specified marker. must be within host..endhost or won't be splitted.\n"
 		" --dpi-desync-hostfakesplit-mod=mod[,mod]\t\t; mods can be none,host=<hostname>,altorder=0|1\n"
-		" --dpi-desync-ipfrag-pos-tcp=<8..%u>\t\t\t; ip frag position starting from the transport header. multiple of 8, default %u.\n"
 		" --dpi-desync-ipfrag-pos-udp=<8..%u>\t\t\t; ip frag position starting from the transport header. multiple of 8, default %u.\n"
+		" --dpi-desync-ipfrag-pos-tcp=<8..%u>\t\t\t; ip frag position starting from the transport header. multiple of 8, default %u.\n"
 		" --dpi-desync-ts-increment=<int|0xHEX>\t\t\t; ts fooling TSval signed increment. default %d\n"
 		" --dpi-desync-badseq-increment=<int|0xHEX>\t\t; badseq fooling seq signed increment. default %d\n"
 		" --dpi-desync-badack-increment=<int|0xHEX>\t\t; badseq fooling ackseq signed increment. default %d\n"
diff --git a/nfq/protocol.c b/nfq/protocol.c
index 7b1ab6ee..77ab5857 100644
--- a/nfq/protocol.c
+++ b/nfq/protocol.c
@@ -310,7 +310,7 @@ size_t HttpPos(uint8_t posmarker, int16_t pos, const uint8_t *data, size_t sz)
 			if (sz<10) break;
 			if (*method=='\n' || *method=='\r') method++;
 			if (*method=='\n' || *method=='\r') method++;
-			for (p=method,i=0;i<7;i++) if (*p>='A' && *p<='Z') p++;
+			for (p=method,i=0; i<9 && *p>='A' && *p<='Z'; i++,p++);
 			if (i<3 || *p!=' ') break;
 			return CheckPos(sz,method-data+pos);
 		case PM_HOST:
@@ -962,9 +962,9 @@ bool QUICExtractHostFromInitial(const uint8_t *data, size_t data_len, char *host
 
 bool IsQUICInitial(const uint8_t *data, size_t len)
 {
-	// too small packets are not likely to be initials with client hello
+	// too small packets are not likely to be initials
 	// long header, fixed bit
-	if (len < 256 || (data[0] & 0xC0)!=0xC0) return false;
+	if (len < 128 || (data[0] & 0xF0)!=0xC0) return false;
 
 	uint32_t ver = QUICExtractVersion(data,len);
 	if (QUICDraftVersion(ver) < 11) return false;
@@ -973,10 +973,10 @@ bool IsQUICInitial(const uint8_t *data, size_t len)
 	// quic v2 : initial packets are 01b
 	if ((data[0] & 0x30) != (is_quic_v2(ver) ? 0x10 : 0x00)) return false;
 
-	uint64_t offset=5, sz;
+	uint64_t offset=5, sz, sz2;
 
-	// DCID. must be present
-	if (!data[offset] || data[offset] > QUIC_MAX_CID_LENGTH) return false;
+	// DCID
+	if (data[offset] > QUIC_MAX_CID_LENGTH) return false;
 	offset += 1 + data[offset];
 
 	// SCID
@@ -984,18 +984,19 @@ bool IsQUICInitial(const uint8_t *data, size_t len)
 	offset += 1 + data[offset];
 
 	// token length
+	if (offset>=len || (offset + tvb_get_size(data[offset])) > len) return false;
 	offset += tvb_get_varint(data + offset, &sz);
 	offset += sz;
 	if (offset >= len) return false;
 
 	// payload length
-	if ((offset + tvb_get_size(data[offset])) > len) return false;
+	sz2 = tvb_get_size(data[offset]);
+	if ((offset + sz2) > len) return false;
 	tvb_get_varint(data + offset, &sz);
-	offset += sz;
+	offset += sz2 + sz;
 	if (offset > len) return false;
 
-	// client hello cannot be too small. likely ACK
-	return sz>=96;
+	return true;
 }