diff --git a/omr-quota/files/bin/omr-quota b/omr-quota/files/bin/omr-quota
index 65c2a2693..b615ea8f6 100755
--- a/omr-quota/files/bin/omr-quota
+++ b/omr-quota/files/bin/omr-quota
@@ -11,8 +11,10 @@ shift
 # main loop
 while true; do
 	OMR_QUOTA_REAL_INTERFACE="$(ifstatus $OMR_QUOTA_INTERFACE | jsonfilter -e '@.l3_device')"
-	rx=`vnstat -i $OMR_QUOTA_REAL_INTERFACE --json | jsonfilter -q -e '@.interfaces[0].traffic.month[-1].rx' | tr -d "\n"`
-	tx=`vnstat -i $OMR_QUOTA_REAL_INTERFACE --json | jsonfilter -q -e '@.interfaces[0].traffic.month[-1].tx' | tr -d "\n"`
+	rx_bits=`vnstat -i $OMR_QUOTA_REAL_INTERFACE --json | jsonfilter -q -e '@.interfaces[0].traffic.month[-1].rx' | tr -d "\n"`
+	tx_bits=`vnstat -i $OMR_QUOTA_REAL_INTERFACE --json | jsonfilter -q -e '@.interfaces[0].traffic.month[-1].tx' | tr -d "\n"`
+	rx=$((rx_bits/1024))
+	tx=$((tx_bits/1024))
 	tt=$((rx + tx))
 	if [ -n "$OMR_QUOTA_RX" ] && [ "$OMR_QUOTA_RX" -gt 0 ] && [ -n "$rx" ] && [ "$OMR_QUOTA_RX" -le "$rx" ]; then
 		if [ "$(ifstatus $OMR_QUOTA_INTERFACE | jsonfilter -e '@.up')" = "true" ]; then
@@ -29,7 +31,7 @@ while true; do
 			logger -t "OMR-QUOTA" "Set interface $OMR_QUOTA_INTERFACE down, RX+TX quota reached"
 			ifdown $OMR_QUOTA_INTERFACE
 		fi
-	elif [ -n "$OMR_QUOTA_RX" ] && [ "$OMR_QUOTA_RX" -gt 0 ] && [ -n "$OMR_QUOTA_TX" ] && [ "$OMR_QUOTA_TX" -gt 0 ] && [ -n "$OMR_QUOTA_TT" ] && [ "$OMR_QUOTA_TT" -gt 0 ] && [ "$(ifstatus $OMR_QUOTA_INTERFACE | jsonfilter -e '@.up')" = "false" ]; then
+	elif [ "$(ifstatus $OMR_QUOTA_INTERFACE | jsonfilter -e '@.up')" = "false" ]; then
 		logger -t "OMR-QUOTA" "Set interface $OMR_QUOTA_INTERFACE up"
 		ifup $OMR_QUOTA_INTERFACE
 	fi
diff --git a/openmptcprouter/files/etc/init.d/vnstat_backup b/openmptcprouter/files/etc/init.d/vnstat_backup
index 02e9be314..1434285d3 100755
--- a/openmptcprouter/files/etc/init.d/vnstat_backup
+++ b/openmptcprouter/files/etc/init.d/vnstat_backup
@@ -6,16 +6,17 @@ EXTRA_HELP=<<EOF
         restore Restore vnstat database
 EOF
  
-START=98
-STOP=10
+START=50
+STOP=60
  
 vnstat_option() {
-    sed -ne "s/^[;]*$1[[:space:]]*['\"]\([^'\"]*\)['\"].*/\1/p" /etc/vnstat.conf
+    sed -ne "s/^[[:space:]]*$1[[:space:]]*['\"]\([^'\"]*\)['\"].*/\1/p" /etc/vnstat.conf
 }
  
 BACKUP_FILE=/etc/vnstat_backup.tar.gz
 LOGGER_TAG=vnstat_backup
 VNSTAT_DIR="$(vnstat_option DatabaseDir)"
+[ -n "$VNSTAT_DIR" ] || VNSTAT_DIR="/var/lib/vnstat"
 
 _chk_omrquota() {
 	config_get enabled $1 enabled
@@ -59,4 +60,4 @@ backup() {
  
 restore() {
 	restore_database
-}
\ No newline at end of file
+}
diff --git a/shadowsocks-libev/files/nft-rules/chain.uc b/shadowsocks-libev/files/nft-rules/chain.uc
index 3b2cc0813..9da09f27a 100644
--- a/shadowsocks-libev/files/nft-rules/chain.uc
+++ b/shadowsocks-libev/files/nft-rules/chain.uc
@@ -43,7 +43,7 @@ let type, hook, priority, redir_port;
 if (proto == "tcp") {
 	type = "nat";
 	hook = "prerouting";
-	priority = -1;
+	priority = 1;
 	redir_port = o_redir_tcp_port;
 } else if (proto == "udp") {
 	type = "filter";
diff --git a/shadowsocks-rust/files/nft-rules/chain.uc b/shadowsocks-rust/files/nft-rules/chain.uc
index 3b2cc0813..9da09f27a 100644
--- a/shadowsocks-rust/files/nft-rules/chain.uc
+++ b/shadowsocks-rust/files/nft-rules/chain.uc
@@ -43,7 +43,7 @@ let type, hook, priority, redir_port;
 if (proto == "tcp") {
 	type = "nat";
 	hook = "prerouting";
-	priority = -1;
+	priority = 1;
 	redir_port = o_redir_tcp_port;
 } else if (proto == "udp") {
 	type = "filter";
diff --git a/v2ray-core/files/usr/share/v2ray-rules/chain.uc b/v2ray-core/files/usr/share/v2ray-rules/chain.uc
index c0855c674..34075d9c8 100644
--- a/v2ray-core/files/usr/share/v2ray-rules/chain.uc
+++ b/v2ray-core/files/usr/share/v2ray-rules/chain.uc
@@ -43,7 +43,7 @@ let type, hook, priority, redir_port;
 if (proto == "tcp") {
 	type = "nat";
 	hook = "prerouting";
-	priority = -1;
+	priority = 1;
 	redir_port = o_redir_tcp_port;
 } else if (proto == "udp") {
 	type = "filter";
diff --git a/xray-core/files/usr/share/xray-rules/chain.uc b/xray-core/files/usr/share/xray-rules/chain.uc
index cb46ba5e8..be456b014 100644
--- a/xray-core/files/usr/share/xray-rules/chain.uc
+++ b/xray-core/files/usr/share/xray-rules/chain.uc
@@ -43,7 +43,7 @@ let type, hook, priority, redir_port;
 if (proto == "tcp") {
 	type = "nat";
 	hook = "prerouting";
-	priority = -1;
+	priority = 1;
 	redir_port = o_redir_tcp_port;
 } else if (proto == "udp") {
 	type = "filter";