OpenWRT randomise access point MAC addresses

wifi_mac_randomiser.sh

#!/bin/sh

get_random_mac () {
        echo $(dd if=/dev/urandom bs=1024 count=1 2>/dev/null | md5sum | sed -e 's/^\(..\)\(..\)\(..\)\(..\)\(..\)\(..\).*$/\1:\2:\3:\4:\
}

for networkid in $(uci show wireless | grep wifinet | cut -d "." -f2 | uniq | grep -v -E wifi-iface)
do
        uci set wireless.${networkid}.macaddr=$(get_random_mac)
done
wifi