i need to know the mac of a device thats connected to ether2. the setup is on top of a 15m bamboo so i really don't want to go up there to find out. is there an easy way to find out? rb433 with routeros 4.5

check /ip arp print

nob no arp entry

does that 'thing' generate some traffic at all?..

problem solved...
the thing wanted a dhcp lease but radius would not allow, because the mac address was not listed, so i set up a different dhcp server and then the device showed up in the arp list...