DWM1001 Raspberry Pi Model 3b+ Gateway configuration

Hi all,
I bought the MDEK1001 evaluation kit and I would like to use the raspberry 3b+ as a gateway. From the previous topics I read that to make it work I need to disable ethernet. I would like to know how can i disable ethernet from raspberry.
Thanks in advance,

Hi @NC02
I thing that the easiest way would be not to plug in the cable 8-). The second way would be to run this command “sudo ifconfig eth0 down”