connect to winbox by mac in windows server with 2 NIC

hello,
i have a windows server with 2 NIC the first NIC connected to internet with default gateway and the second NIC connected to my CCR->Ether8 and third NIC connected to our private network so ifi lost access to my ccr i will connect by private network and i want connec to winbox by mac address but winbox does not should it as neighbour , whats wrong?
i see neighbor from my first NIC and i do not see neighbour on my second NIC
thanks