12:34:56:78:9a:bc may i please have the mac address of your modem therefore to diagnose your problem
media access control address- hardware address that identifies each node on a network consisting of4 8 bits expressed as 12 hexadecimal digits
"12:34:56:78:9a:bc may i please have the mac address of your modem therefore to diagnose your problem" What is the definition of "mac"?