To Get MAC Address in AIX run the follwing command :

netstat -ia

Example :

#netstat -ia
Name  Mtu   Network     Address            Ipkts Ierrs    Opkts Oerrs  Coll
en0   1500  link#2      0.24.9e.77.5r.48  3065618     0  2014509     3     0
                        01:22:5a:7e:ef:fe
                        01:22:5a:00:00:21

>>>additional output removed<<<