I am not knowingly trying to set up a second network. Before the eero routers, every single sketch to do with netwoirking had hidden somewhere the address 192.168.4.1 it's even in wiki as a standard address and my ISP should not be using it. Every board I have used to be accessible at 192.168.4.1.
Since the isp foisted these eero's on us I need to change the 192.168.4.1 universal portal address to another address.
According to my limited research the WiFi.softAPConfig(local_IP, gateway, subnet) does that but for some weird reason it is not working.