Raspberry Pi as a router using a single network interface
Setup Raspberry Pi as a WiFi access point - KaliTut
Building your own Router with a Raspberry Pi — Technically Wizardry
Two Tiny Dual-Gigabit Raspberry Pi CM4 Routers | Jeff Geerling
Amazon.com: GeeekPi Raspberry Pi CM4 Router Board,Raspberry Pi Compute Module 4 Expansion Board Breakout Board Module for Raspberry Pi Compute Module 4 Series : Electronics
Raspberry Pi Wireless Access Point - Pi My Life Up
ROS with Raspberry Pi: Improving WIFI Upload Speed - DEV Community
Two Tiny Dual-Gigabit Raspberry Pi CM4 Routers | Jeff Geerling
This 6-inch board turns a Raspberry Pi module into a DIY router | Ars Technica