minus-squareup4whatev33@alien.topBtoHome Networking@selfhosted.forum•how does my isp know my device?linkfedilinkEnglisharrow-up1·1 year agoNothing to do with routing … the first part of a L2 MAC address is the OUI… organizationally unique identifier… so they know the device type. linkfedilink
Nothing to do with routing … the first part of a L2 MAC address is the OUI… organizationally unique identifier… so they know the device type.