Dumb pipe is a tool that allows for easy, direct connections between devices, punching through NATs and staying connected as network conditions change. It uses the iroh rust crate and QUIC over a magic socket, providing features like UDP-based, stream-multiplexing, and encrypted connections. The tool can be installed with a single command on two computers, and data can be piped from one machine to the other without accounts or configuration. Dumb pipe is designed to be a low-level, simple solution for connecting devices.