diff --git a/recipes-core/netbase/netbase/imx233-olinuxino-maxi/00-persistent-mac b/recipes-core/netbase/netbase/imx233-olinuxino-maxi/00-persistent-mac
deleted file mode 100644
index 8981d38..0000000
--- a/recipes-core/netbase/netbase/imx233-olinuxino-maxi/00-persistent-mac
+++ /dev/null
@@ -1,22 +0,0 @@
-#!/bin/sh
-
-set -e
-
-mac_file="/var/lib/mac/mac.$IFACE"
-
-# Store MAC for reuse
-mkdir -p /var/lib/mac
-if [ ! -r "$mac_file" ]; then
-    echo "Storing MAC for $IFACE for future use." > /dev/stderr
-    cat /sys/class/net/usb0/address > "$mac_file"
-    exit 0
-fi
-
-# Restore MAC setting
-stored=`cat "$mac_file"`
-current=`cat /sys/class/net/usb0/address`
-
-if [ "$current" != "$stored" ]; then
-    echo "Setting back to old MAC."
-    ifconfig $IFACE hw ether $stored
-fi
diff --git a/recipes-core/netbase/netbase_5.0.bbappend b/recipes-core/netbase/netbase_5.1.bbappend
similarity index 61%
rename from recipes-core/netbase/netbase_5.0.bbappend
rename to recipes-core/netbase/netbase_5.1.bbappend
index 2c1ccbe..04648c7 100644
--- a/recipes-core/netbase/netbase_5.0.bbappend
+++ b/recipes-core/netbase/netbase_5.1.bbappend
@@ -1,3 +1 @@
 FILESEXTRAPATHS_prepend := "${THISDIR}/netbase:"
-
-PRINC := "${@int(PRINC) + 1}"