Changing the MAC address in Mikrotik routers is a very topical issue. Almost all providers in their network bind by mac-address. And if you change the router to a new one, you need to change the maс-addresses.
So, for example, let’s take Mikrotik RouterBoard 2011UiAS-2HnD r2
We go to the menu using Winbox and add the rule to the New Terminal:
/ interface ethernet set ether1 mac-address = XX:XX:XX:XX:XX:XX
change to your MAC; set ether1 – write the name of the interface on which we will change the mac.
:put [/interface ethernet get [/interface ethernet find default-name=ether1] mac-address ] Output: XX:XX:XX:XX:XX:XX
In this simple way, you can change all MAC addresses in RB Mikrotik.