I am not sure if this is intended behavior or if I am missed something. I have a new Archer C5400 and I have noticed that about 75% of all the connected devices share the same first 6 digits in the MAC address, all the device are wireless and different manufacturers, However the last 6 digits are correct. It looks like like the router is removing the first 6 and replacing it the same 6 digits. Any help with this would be greatly appreciated.