In the following thread we could not find a solution for listing all the attached active remote devices with their remote IP and MAC as well the local unique interface name on the switch device:
http://forum.mikrotik.com/t/how-to-get-ip-mac-etherport-for-all-currently-active-etherports/139567/15
The “/ip/arp” location lacks a key/value pair for the unique interface identification.
Is there an alternative solution possible in beta5?
If not, then I suggest such a new key/value pair be added to the “/ip/arp” location.
Update:
A solution has finally been found! See above link.
Closing this.