While I believe it would benefit from a GUI, it would just bring up a selection of your installed network devices (NIC drivers.device), let you pick the one you want to use, and then deposit it in the DEVS:NetworkInterfaces directory and then reboot. The few changes in your S:User-Startup script starts the stack silently. The are new commands in your C: directory for information and control that can be run from the shell or IconX'd for use. It was so bloody seamless that I had to check that Miami was off and RoadShow was active. Heysus, it is slick and fast. No settings to memorize (it loves DHCP), "It's set it and forget it!" Well, there is no "set it," just hit install, copy one file and reboot. The download speed in cps matches OS 4.1's exactly -- funny, with less effort!?
In theory, you could copy all the network interface configuration files from SYS:Storage/NetInterfaces into your DEVS:NetInterfaces drawer and just reboot.
I haven't tried this myself, mind you, but it ought to work if your Amiga network interface is connected to an Ethernet/Wi-Fi network which support DHCP address allocation.
While it would take a while for the network startup script to read each config file and invoke the C:AddNetInterface command, provided that at least one configuration works, the network should start automatically without requiring you to pick any particular configuration file.