diff --git a/debian9-x86_64.sh b/debian9-x86_64.sh
index 2f24620..0df040c 100644
--- a/debian9-x86_64.sh
+++ b/debian9-x86_64.sh
@@ -19,8 +19,8 @@ DSVPN=${DSVPN:-yes}
 SOURCES=${SOURCES:-yes}
 NOINTERNET=${NOINTERNET:-no}
 INTERFACE=${INTERFACE:-$(ip -o -4 route show to default | grep -m 1 -Po '(?<=dev )(\S+)' | tr -d "\n")}
-KERNEL_VERSION="5.4.42"
-KERNEL_PACKAGE_VERSION="1.9+1efcfb3"
+KERNEL_VERSION="5.4.52"
+KERNEL_PACKAGE_VERSION="1.10+206826e"
 KERNEL_RELEASE="${KERNEL_VERSION}-mptcp_${KERNEL_PACKAGE_VERSION}"
 GLORYTUN_UDP_VERSION="3622f928caf03709c4031a34feec85c623bc5281"
 #MLVPN_VERSION="8f9720978b28c1954f9f229525333547283316d2"
diff --git a/omr-service b/omr-service
index a4cc162..ecb1568 100755
--- a/omr-service
+++ b/omr-service
@@ -50,11 +50,28 @@ _lan_route() {
 	done
 }
 
+_gre_tunnels() {
+	. "$(readlink -f "/etc/shorewall/params.vpn")"
+	for intf in /etc/openmptcprouter-vps-admin/intf/*; do
+		. "$(readlink -f "$intf")"
+		iface="$(basename $intf)"
+		if [ "$(ip tunnel show $iface 2>/dev/null | awk '{print $4}')" != "$OMR_ADDR" ]; then
+			ip tunnel del $iface 2>&1 >/dev/null
+			ip tunnel add $iface mode gre local $INTFADDR remote $OMR_ADDR
+			ip link set $iface up
+			ip addr add $LOCALIP dev $iface
+			ip route add $NETWORK dev $iface 2>&1 >/dev/null
+		fi
+	done
+}
+
+
 while true; do
 	_glorytun_udp
 	_glorytun_tcp
 	_multipath
 	_omr_api
 	_lan_route
+	_gre_tunnels
 	sleep 10
 done
diff --git a/openmptcprouter-shorewall.tar.gz b/openmptcprouter-shorewall.tar.gz
index 1fa2387..69fe332 100644
Binary files a/openmptcprouter-shorewall.tar.gz and b/openmptcprouter-shorewall.tar.gz differ
diff --git a/shadowsocks.conf b/shadowsocks.conf
index f4e8a5a..c8a441f 100644
--- a/shadowsocks.conf
+++ b/shadowsocks.conf
@@ -51,6 +51,7 @@ net.core.default_qdisc = fq
 net.netfilter.nf_conntrack_max = 131072
 
 net.ipv4.conf.all.log_martians = 0
+net.ipv4.conf.default.log_martians = 0
 
 # MPTCP settings
 net.mptcp.mptcp_checksum = 0
diff --git a/shorewall4/interfaces b/shorewall4/interfaces
index b667114..2f3e3ac 100644
--- a/shorewall4/interfaces
+++ b/shorewall4/interfaces
@@ -20,4 +20,5 @@ vpn	gt-udp-tun+	nosmurfs,tcpflags
 vpn	mlvpn+		nosmurfs,tcpflags
 vpn	tun+		nosmurfs,tcpflags
 vpn	dsvpn+		nosmurfs,tcpflags
+vpn	gre-user+	nosmurfs,tcpflags