Hi together,
I am using a RT-AC87U and an AVM 1750E repeater. Now I have the problem, that all clients which are connected to the repeater, are shown on the AC-87U with the repeater MAC.
Does somebody know how I can fix it?
There is a fundamental problem with wireless repeaters in that they can't preserve the MAC addresses of their clients. Manufacturers get around this problem by using proprietary or non-standard techniques. This means that devices from the same manufacturer usually work with each other but devices from different manufacturers often have compatibility problems similar to what you are seeing.
Yes/No - depends on how repeaters work - Fritzboxen are pretty advanced, and may be acting as de facto routers - so the DHCP requests at layer2/3 might all be coming from the same source MAC address - which is the Fritzbox, not the actual clients... and it's all legit from a spec view...