PS:
the simplest thing is to create the file:
/etc/ethers
and copy it to all AP dumps
cat /etc/ethers
#
# Lookup man 5 ethers for syntax documentation
#
# Examples :
# 02:00:11:22:33:44 OpenWrt.lan
# 02:00:11:22:33:44 192.168.1.1
02:00:11:22:33:41 myhost
02:00:11:22:33:42 myhost2