Hello, my name is Michael I am A Senior Engineer and have been for over 18 years. I write code in many languages such as C/C++, .Net languages, Java, and also do scripting. I propose using pcap (what wireshark uses) and monitor the local network and use filtering based on your list of MAC addresses. If you decide to go with my bid, we can talk more about the exact details. I believe this can be done very quickly and I have already written similar code. I look forward to hearing back from you soon.