diff --git a/src/packages/fff/fff-network/Makefile b/src/packages/fff/fff-network/Makefile
index c97a816a..21af16af 100644
--- a/src/packages/fff/fff-network/Makefile
+++ b/src/packages/fff/fff-network/Makefile
@@ -1,7 +1,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=fff-network
-PKG_RELEASE:=31
+PKG_RELEASE:=32
 
 include $(INCLUDE_DIR)/package.mk
 
diff --git a/src/packages/fff/fff-network/files/lib/functions/fff/network b/src/packages/fff/fff-network/files/lib/functions/fff/network
index e17426a8..bc688419 100644
--- a/src/packages/fff/fff-network/files/lib/functions/fff/network
+++ b/src/packages/fff/fff-network/files/lib/functions/fff/network
@@ -28,14 +28,3 @@ ipEUISuffix() {
 	echo "$mac" | awk -F: '{ printf("%02x%s:%sff:fe%s:%s%s\n", xor(("0x"$1),2), $2, $3, $4, $5, $6) }'
 	return 0
 }
-
-macFlipLocalBit() {
-	# Returns given MAC-address with locally administered bit flipped
-	#
-	# Argument: MAC-address
-
-	local mac=$1
-
-	echo "$mac" | awk -F: '{ printf("%02x:%s:%s:%s:%s:%s\n", xor(("0x"$1),2), $2, $3, $4, $5, $6) }'
-	return 0
-}
diff --git a/src/packages/fff/fff-network/mips/network.cpe210 b/src/packages/fff/fff-network/mips/network.cpe210
index a690d54a..46abe721 100644
--- a/src/packages/fff/fff-network/mips/network.cpe210
+++ b/src/packages/fff/fff-network/mips/network.cpe210
@@ -1,4 +1,4 @@
-. /lib/functions/fff/network
+. /lib/functions/system.sh
 
 WANDEV=eth0
 SWITCHDEV=eth0
@@ -9,7 +9,7 @@ BATMAN_PORTS="0t"
 # use mac address from phy0 with 'locally administered' bit set to '1'
 # only possible, because wXmesh is created first and therefore gets the 'universally administered address'
 
-ETHMESHMAC=$(macFlipLocalBit "$(cat /sys/class/ieee80211/phy0/macaddress)")
+ETHMESHMAC=$(macaddr_setbit_la "$(cat /sys/class/ieee80211/phy0/macaddress)")
 ROUTERMAC=$(cat /sys/class/net/eth0/address)
 
 . /etc/network.mode
diff --git a/src/packages/fff/fff-network/mips/network.cpe510 b/src/packages/fff/fff-network/mips/network.cpe510
index a690d54a..46abe721 100644
--- a/src/packages/fff/fff-network/mips/network.cpe510
+++ b/src/packages/fff/fff-network/mips/network.cpe510
@@ -1,4 +1,4 @@
-. /lib/functions/fff/network
+. /lib/functions/system.sh
 
 WANDEV=eth0
 SWITCHDEV=eth0
@@ -9,7 +9,7 @@ BATMAN_PORTS="0t"
 # use mac address from phy0 with 'locally administered' bit set to '1'
 # only possible, because wXmesh is created first and therefore gets the 'universally administered address'
 
-ETHMESHMAC=$(macFlipLocalBit "$(cat /sys/class/ieee80211/phy0/macaddress)")
+ETHMESHMAC=$(macaddr_setbit_la "$(cat /sys/class/ieee80211/phy0/macaddress)")
 ROUTERMAC=$(cat /sys/class/net/eth0/address)
 
 . /etc/network.mode
diff --git a/src/packages/fff/fff-network/mips/network.glinet,gl-ar150 b/src/packages/fff/fff-network/mips/network.glinet,gl-ar150
index cb1ce84c..a3f0d1a4 100644
--- a/src/packages/fff/fff-network/mips/network.glinet,gl-ar150
+++ b/src/packages/fff/fff-network/mips/network.glinet,gl-ar150
@@ -1,4 +1,4 @@
-. /lib/functions/fff/network
+. /lib/functions/system.sh
 
 WANDEV=eth1
 SWITCHDEV=eth0
@@ -7,7 +7,7 @@ BATMAN_PORTS="0t"
 CLIENT_PORTS="0t"
 
 ROUTERMAC=$(cat /sys/class/net/eth0/address)
-ETHMESHMAC="$(macFlipLocalBit "$ROUTERMAC")"
+ETHMESHMAC="$(macaddr_setbit_la "$ROUTERMAC")"
 
 . /etc/network.mode
 
diff --git a/src/packages/fff/fff-network/mips/network.tplink,archer-c7-v5 b/src/packages/fff/fff-network/mips/network.tplink,archer-c7-v5
index 1a217e8b..dad3e2b6 100644
--- a/src/packages/fff/fff-network/mips/network.tplink,archer-c7-v5
+++ b/src/packages/fff/fff-network/mips/network.tplink,archer-c7-v5
@@ -1,4 +1,4 @@
-. /lib/functions/fff/network
+. /lib/functions/system.sh
 
 WANDEV=eth0
 SWITCHDEV=eth0
@@ -9,5 +9,5 @@ BATMAN_PORTS="2 3 0t"
 # use mac address from phy1 with 'locally administered' bit set to '1'
 # only possible, because wXmesh is created first and therefore gets the 'universally administered address'
 
-ETHMESHMAC=$(macFlipLocalBit "$(cat /sys/class/ieee80211/phy1/macaddress)")
+ETHMESHMAC=$(macaddr_setbit_la "$(cat /sys/class/ieee80211/phy1/macaddress)")
 ROUTERMAC=$(cat /sys/class/net/eth0/address)
diff --git a/src/packages/fff/fff-network/mips/network.tplink,tl-wr1043nd-v1 b/src/packages/fff/fff-network/mips/network.tplink,tl-wr1043nd-v1
index 7caeaa1e..89434a27 100644
--- a/src/packages/fff/fff-network/mips/network.tplink,tl-wr1043nd-v1
+++ b/src/packages/fff/fff-network/mips/network.tplink,tl-wr1043nd-v1
@@ -1,4 +1,4 @@
-. /lib/functions/fff/network
+. /lib/functions/system.sh
 
 WANDEV=eth0
 SWITCHDEV=eth0
@@ -9,5 +9,5 @@ BATMAN_PORTS="1 2 5t"
 # use mac address from phy0 with 'locally administered' bit set to '1'
 # only possible, because wXmesh is created first and therefore gets the 'universally administered address'
 
-ETHMESHMAC=$(macFlipLocalBit "$(cat /sys/class/ieee80211/phy0/macaddress)")
+ETHMESHMAC=$(macaddr_setbit_la "$(cat /sys/class/ieee80211/phy0/macaddress)")
 ROUTERMAC=$(cat /sys/class/net/eth0/address)
diff --git a/src/packages/fff/fff-network/mipsel/network.r6220 b/src/packages/fff/fff-network/mipsel/network.r6220
index f1f77bfe..0765f009 100644
--- a/src/packages/fff/fff-network/mipsel/network.r6220
+++ b/src/packages/fff/fff-network/mipsel/network.r6220
@@ -1,4 +1,4 @@
-. /lib/functions/fff/network
+. /lib/functions/system.sh
 
 WANDEV=eth0
 SWITCHDEV=eth0
@@ -7,4 +7,4 @@ WAN_PORTS="6t 4"
 BATMAN_PORTS="6t 2 3"
 
 ROUTERMAC=$(cat /sys/class/net/eth0/address)
-ETHMESHMAC=$(macFlipLocalBit "$(cat /sys/class/net/eth0/address)")
+ETHMESHMAC=$(macaddr_setbit_la "$(cat /sys/class/net/eth0/address)")
diff --git a/src/packages/fff/fff-network/mipsel/network.tplink,c50-v3 b/src/packages/fff/fff-network/mipsel/network.tplink,c50-v3
index a779a717..f4db6847 100644
--- a/src/packages/fff/fff-network/mipsel/network.tplink,c50-v3
+++ b/src/packages/fff/fff-network/mipsel/network.tplink,c50-v3
@@ -1,4 +1,4 @@
-. /lib/functions/fff/network
+. /lib/functions/system.sh
 
 WANDEV=eth0
 SWITCHDEV=eth0
@@ -7,4 +7,4 @@ WAN_PORTS="6t 0"
 BATMAN_PORTS="6t 1 2"
 
 ROUTERMAC=$(cat /sys/class/net/eth0/address)
-ETHMESHMAC=$(macFlipLocalBit "$(cat /sys/class/net/eth0/address)")
+ETHMESHMAC=$(macaddr_setbit_la "$(cat /sys/class/net/eth0/address)")
diff --git a/src/packages/fff/fff-network/mipsel/network.tplink,c50-v4 b/src/packages/fff/fff-network/mipsel/network.tplink,c50-v4
index a779a717..f4db6847 100644
--- a/src/packages/fff/fff-network/mipsel/network.tplink,c50-v4
+++ b/src/packages/fff/fff-network/mipsel/network.tplink,c50-v4
@@ -1,4 +1,4 @@
-. /lib/functions/fff/network
+. /lib/functions/system.sh
 
 WANDEV=eth0
 SWITCHDEV=eth0
@@ -7,4 +7,4 @@ WAN_PORTS="6t 0"
 BATMAN_PORTS="6t 1 2"
 
 ROUTERMAC=$(cat /sys/class/net/eth0/address)
-ETHMESHMAC=$(macFlipLocalBit "$(cat /sys/class/net/eth0/address)")
+ETHMESHMAC=$(macaddr_setbit_la "$(cat /sys/class/net/eth0/address)")
diff --git a/src/packages/fff/fff-network/powerpc/network.tplink,tl-wdr4900-v1 b/src/packages/fff/fff-network/powerpc/network.tplink,tl-wdr4900-v1
index 9caa6af4..22841a92 100644
--- a/src/packages/fff/fff-network/powerpc/network.tplink,tl-wdr4900-v1
+++ b/src/packages/fff/fff-network/powerpc/network.tplink,tl-wdr4900-v1
@@ -1,4 +1,4 @@
-. /lib/functions/fff/network
+. /lib/functions/system.sh
 
 WANDEV=eth0
 SWITCHDEV=eth0
@@ -9,5 +9,5 @@ BATMAN_PORTS="0t 2 3"
 # use mac address from phy1 with 'locally administered' bit set to '1'
 # only possible, because wXmesh is created first and therefore gets the 'universally administered address'
 
-ETHMESHMAC=$(macFlipLocalBit "$(cat /sys/class/ieee80211/phy1/macaddress)")
+ETHMESHMAC=$(macaddr_setbit_la "$(cat /sys/class/ieee80211/phy1/macaddress)")
 ROUTERMAC=$(cat /sys/class/net/eth0/address)