How can i copy my modems Wan MAC ID?

I' m very near to install OpenWRT to my Mercusys MR70x device.

I am using it as router, after my Netmaster Inifinty 401 modem that is in bridge mode.

My internet service provider dont use CHAP or PAP with PPOE to user auth and they only use MAC ID verification on Docsis 3.0 system. (May be its old fashioned but unfortunately, many technologic system is old fashioned in Turkey... :face_with_diagonal_mouth: )

When i use MR70x' s in offical stock rom, its automatically detects and adjust Clonning MAC ID operation itself, but i dont know how can i do it after install OpenWRT... :roll_eyes:

Can OpenWRT recognize my settings itself and do everything or must i do something to set?

PS : English is not my native language so sorry if i did mistake in my post... :folded_hands: :smiling_face:

Adil ALPMAN

Typically you power off cpe after setting passthrough mode. DOCSIS while powered on puts extra MACs behind NAT. So your new $outer should be first getting dhcp addresafter power on.s