What I asked was based on this video from bitmain, it seems to me it is a new functionality of their software.
There's this batch configuring option. My doubt was if it would fix the ip to the router through mac address(which I did before in a smaller farm), setting it directly in the router's configurations; or if this setup would change the gear configurations and set it automatically to static in thar specific ip addres, or would go into DHCP and work only until the next reset.
https://www.youtube.com/watch?v=a8BbDtsRVH0