diff --git a/luci-app-openmptcprouter/luasrc/controller/openmptcprouter.lua b/luci-app-openmptcprouter/luasrc/controller/openmptcprouter.lua
index 1e057aa10..10b7e0bcf 100644
--- a/luci-app-openmptcprouter/luasrc/controller/openmptcprouter.lua
+++ b/luci-app-openmptcprouter/luasrc/controller/openmptcprouter.lua
@@ -141,9 +141,9 @@ function wizard_add()
 		ucic:set("network",intf,"netmask",netmask)
 		ucic:set("network",intf,"gateway",gateway)
 
-		local downloadspeed = luci.http.formvalue("cbid.sqm.%s.download" % intf) or ""
-		local uploadspeed = luci.http.formvalue("cbid.sqm.%s.upload" % intf) or ""
-		if downloadspeed ~= "" and uploadspeed ~= "" then
+		local downloadspeed = luci.http.formvalue("cbid.sqm.%s.download" % intf) or "0"
+		local uploadspeed = luci.http.formvalue("cbid.sqm.%s.upload" % intf) or "0"
+		if downloadspeed ~= "0" and uploadspeed ~= "0" then
 			ucic:set("sqm",intf,"download",downloadspeed)
 			ucic:set("sqm",intf,"upload",uploadspeed)
 			ucic:set("sqm",intf,"enabled","1")
diff --git a/luci-app-openmptcprouter/luasrc/view/openmptcprouter/wizard.htm b/luci-app-openmptcprouter/luasrc/view/openmptcprouter/wizard.htm
index 073bc5c34..c0f113692 100644
--- a/luci-app-openmptcprouter/luasrc/view/openmptcprouter/wizard.htm
+++ b/luci-app-openmptcprouter/luasrc/view/openmptcprouter/wizard.htm
@@ -198,7 +198,7 @@ end
 			<input type="text" name="cbid.sqm.<%=ifname%>.download" class="cbi-input-text" value="<%=download%>" data-type="uinteger">
 			<br />
 			<div class="cbi-value-description">
-			    <%:Set value between 80-95% of max download speed link. Empty to disable.%>
+			    <%:Set value between 80-95% of max download speed link. 0 to disable.%>
 			</div>
 		    </div>
 		</div>
@@ -207,9 +207,9 @@ end
 		    <div class="cbi-value-field">
 			<input type="text" name="cbid.sqm.<%=ifname%>.upload" class="cbi-input-text" value="<%=upload%>" data-type="uinteger">
 			<br />
-		    </div>
-		    <div class="cbi-value-description">
-			<%:Set value between 80-95% of max upload speed link. Empty to disable.%>
+			<div class="cbi-value-description">
+			    <%:Set value between 80-95% of max upload speed link. 0 to disable.%>
+			</div>
 		    </div>
 		</div>
 	    </fieldset>
diff --git a/luci-app-openmptcprouter/root/etc/init.d/openmptcprouter b/luci-app-openmptcprouter/root/etc/init.d/openmptcprouter
index 67272330f..5db7f8561 100755
--- a/luci-app-openmptcprouter/root/etc/init.d/openmptcprouter
+++ b/luci-app-openmptcprouter/root/etc/init.d/openmptcprouter
@@ -19,6 +19,31 @@ omr_intf_set() {
 	uci -q set openmptcprouter.$1=interface
 }
 
+set_ipv6_state() {
+	local disable_ipv6=$1
+	sysctl -w net.ipv6.conf.all.disable_ipv6=$disable_ipv6
+	sed -i 's:^net.ipv6.conf.all.disable_ipv6=[0-9]*:net.ipv6.conf.all.disable_ipv6=$disable_ipv6:' /etc/sysctl.d/zzz_openmptcprouter.conf
+	uci -q set firewall.@defaults[0].disable_ipv6=$disable_ipv6
+	uci -q commit firewall
+	if [ "$disable_ipv6" == "1" ]; then
+		uci -q set dhcp.lan.ra_default="0"
+	fi
+
+	if [ "$disable_ipv6" == "1" ]; then
+		uci -q del dhcp.lan.dhcpv6
+		uci -q del dhcp.lan.ra
+		uci -q del dhcp.lan.ra_default
+		uci -q set shadowsocks-libev.hi.local_address="0.0.0.0"
+	else
+		uci -q set shadowsocks-libev.hi.local_address="::"
+	fi
+	uci -q commit dhcp
+	if [ "$disable_ipv6" == "1" ]; then
+		/etc/init.d/odhcpd stop >/dev/null 2>&1
+		/etc/init.d/odhcpd disable >/dev/null 2>&1
+	fi
+}
+
 start_service() {
 	local scaling_min_freq scaling_max_freq
 
@@ -46,6 +71,10 @@ start_service() {
 			echo $scaling_governor > $c/scaling_governor
 		done
 	}
+	config_get disable_ipv6 settings disable_ipv6 "0"
+	if [ "$(sysctl net.ipv6.conf.all.disable_ipv6 | tr -d '\n')" != "$disable_ipv6" ]; then
+		set_ipv6_state $disable_ipv6
+	fi
 	# remove sysctl already defined in /etc/sysctl.d/
 	sed -i -e '/tcp_fin_timeout/d' -e '/tcp_keepalive_time/d' -e '/nf_conntrack_max/d' /etc/sysctl.conf
 	sed -i -e '/tcp_fin_timeout/d' -e '/tcp_keepalive_time/d' -e '/nf_conntrack_max/d' /etc/sysctl.d/10-default.conf