diff --git a/mptcp/files/etc/init.d/mptcp b/mptcp/files/etc/init.d/mptcp
index 6a4b6ee134..0491764721 100755
--- a/mptcp/files/etc/init.d/mptcp
+++ b/mptcp/files/etc/init.d/mptcp
@@ -344,8 +344,8 @@ interface_multipath_settings() {
 			#	gateway6=$(ubus call network.interface.${config}_6 status 2>/dev/null | jsonfilter -q -l 1 -e '@.inactive.route[@.target="::"].nexthop' | tr -d "\n")
 			#fi
 			gateway6=$(echo $gateway6 | cut -d/ -f1 | tr -d "\n")
-			netmask6=$(ip -6 addr show dev $iface | sort -r | grep -m 1 inet6 | awk '{print $2}' | cut -d/ -f2 | tr -d "\n")
-			[ -n "$ip6addr" ] && network6=`ipcalc -n $ip6addr | sed -n '/NETWORK=/{;s/.*=//;s/ .*//;p;}'`
+			[ -n "$ip6addr" ] && netmask6=$(ip -6 addr show dev $iface | grep $ip6addr | grep -m 1 inet6 | awk '{print $2}' | cut -d/ -f2 | tr -d "\n")
+			[ -n "$ip6addr" ] && [ -n "$netmask6" ] && network6=`/usr/sbin/ipcalc -n ${ip6addr}/${netmask6} | sed -n '/NETWORK=/{;s/.*=//;s/ .*//;p;}'`
 		fi
 		if [ "$(uci -q get openmptcprouter.settings.uci_route)" = "1" ]; then
 			uci -q batch <<-EOF >/dev/null
diff --git a/omr-tracker/files/bin/omr-tracker b/omr-tracker/files/bin/omr-tracker
index ea488022e5..d8a9d4ceca 100755
--- a/omr-tracker/files/bin/omr-tracker
+++ b/omr-tracker/files/bin/omr-tracker
@@ -264,11 +264,11 @@ while true; do
 	serverip_ping=false
 	[ -z "$OMR_TRACKER_DEVICE" ] && {
 			network_get_device OMR_TRACKER_DEVICE $OMR_TRACKER_INTERFACE
-			[ -z "$OMR_TRACKER_DEVICE" ] && network_get_physdev OMR_TRACKER_DEVICE $1
-			[ -z "$OMR_TRACKER_DEVICE" ] && OMR_TRACKER_DEVICE=$(ifstatus "$1" | jsonfilter -q -e '@["l3_device"]')
-			[ -z "$OMR_TRACKER_DEVICE" ] && OMR_TRACKER_DEVICE=$(ifstatus "$1_4" | jsonfilter -q -e '@["l3_device"]')
-			#[ -z "$OMR_TRACKER_DEVICE" ] && config_get OMR_TRACKER_DEVICE "$1" device
-			[ -n "$(echo $OMR_TRACKER_DEVICE | grep '@')" ] && OMR_TRACKER_DEVICE=$(ifstatus "$1" | jsonfilter -q -e '@["device"]')
+			[ -z "$OMR_TRACKER_DEVICE" ] && network_get_physdev OMR_TRACKER_DEVICE $OMR_TRACKER_INTERFACE
+			[ -z "$OMR_TRACKER_DEVICE" ] && OMR_TRACKER_DEVICE=$(ifstatus "$OMR_TRACKER_INTERFACE" | jsonfilter -q -e '@["l3_device"]')
+			[ -z "$OMR_TRACKER_DEVICE" ] && OMR_TRACKER_DEVICE=$(ifstatus "${OMR_TRACKER_INTERFACE}_4" | jsonfilter -q -e '@["l3_device"]')
+			#[ -z "$OMR_TRACKER_DEVICE" ] && config_get OMR_TRACKER_DEVICE "$OMR_TRACKER_INTERFACE" device
+			[ -n "$(echo $OMR_TRACKER_DEVICE | grep '@')" ] && OMR_TRACKER_DEVICE=$(ifstatus "$OMR_TRACKER_INTERFACE" | jsonfilter -q -e '@["device"]')
 	}
 
 	if [ -n "$OMR_TRACKER_DEVICE" ] && [ -d "/sys/class/net/$OMR_TRACKER_DEVICE" ]; then
diff --git a/rust/Makefile b/rust/Makefile
index 7ade00a9ef..5e3b91df98 100644
--- a/rust/Makefile
+++ b/rust/Makefile
@@ -30,7 +30,7 @@ define Package/rust
   SUBMENU:=Rust
   TITLE:=Rust Programming Language Compiler
   URL:=https://www.rust-lang.org/
-  DEPENDS:=$(RUST_ARCH_DEPENDS)
+  DEPENDS:=$(RUST_ARCH_DEPENDS) @LINUX_5_4
 endef
 
 define Package/rust/description