llanemu

Linux LAN emulator.

How does it work?

Client-side part of llanemu creates TAP device and sends every packet to server. On server packets are sent to every other connected client.

Client also sets up routing of all outgoing broadcast and multicast packets (255.255.255.255 and 224.0.0.0/24 subnetwork respectively) via newly created TAP device.

Tested software

Minecraft (finds games on "local" network)
Civilization VI

Installation

Manually compile from source

Install Go.
Run the following shell script:

git clone https://github.com/trickybestia/llanemu.git

cd llanemu

export CGO_ENABLED=0

go build -C cmd/client -o ../../build/llanemu -ldflags "-s -w"
go build -C cmd/server -o ../../build/llanemu-server -ldflags "-s -w"

Built binaries will be at llanemu/build directory.

Usage

On server

llanemu-server --endpoint 10.10.0.1:12345

On client A

llanemu --remote-endpoint 10.10.0.1:12345 --name llanemu-tap -a 192.168.123.1/24

On client B

llanemu --remote-endpoint 10.10.0.1:12345 --name llanemu-tap -a 192.168.123.2/24

License

Licensed under GNU GPLv3 only.