Ldn mitm Switch

ldn_mitm
General
Author	spacemeowx2
Type	Other Apps
Version	1.23.0
License	GPL-2.0
Last Updated	2025/12/11
Links
Download
Website
Source

For those who are using older firmware or have been banned from online activities, playing single-player games may seem like the only option. However, the release of switch-lan-play has opened doors by allowing players to enjoy a select list of games online regardless of the circumstances.

Now, with the introduction of ldn_mitm, a custom kip that breaks the final chains, almost every game that supports local wireless can be played online.

It was showcased in the GBAtemp Switch Homebrew Bounty 2018 (Switch application, 3rd place).

Installation

Requirements:

• Atmosphere or SXOS 2.5 Beta+
• switch-lan-play (setup guide)
• ldn_mitm (version table)

How to Use (Atmosphere):

• Download the zip from the release pages.
• Extract the zip to your sd card.
• Boot up Atmosphere with fusee primary.bin.
• Start your game of choice, and select local wireless play.
• (Optional) Use official Switch-lan-play discord to match make and find other players.

How to Use (SXOS):

• Download the latest SXOS.
• Go to SX Menu then to options.
• Enable ldn_mitm.
• Go in-game and select the Wireless Play Option (If you see an L in your WiFi bars that means that the kip did not load and that you need to reboot).

User guide

What is ldn_mitm

It's a custom kip modified from fs_mitm that implements LAN connectivity by replacing the system's ldn service. The original ldn service only calls the WiFi service to scan and connect to nearby Switch. However, ldn_mitm uses the LAN UDP to emulate this scanning process, making it compatible with switch-lan-play. For a configuration tutorial, click here.

Game compatibility

You can find a list of currently tested games here.

Note: It is recommended to only use ldn_mitm and lan-play.exe from their official releases, third-party apps and homebrew are not supported.

Screenshots

Media

MHGU Newest ldn (Sansa Motin)

Rocket League Newest ldn (Sansa Motin)

Compatibility

v1.23.0 (Atmosphere 1.10.1, FW 21.1.0)
v1.22.0 (Atmosphere 1.9.5, FW 20.5.0)
v1.21.0 (Atmosphere 1.9.4, FW 20.4.0)
v1.20.0 (Atmosphere 1.9.3)
v1.19.0 (Atmosphere 1.9.2)
v1.18.0 (Atmosphere 1.9.1)
v1.17.0 (Atmosphere 1.6.2)
v1.16.0 (Atmosphere 1.5.5)
v1.15.0 (Atmosphere 1.5.2)
v1.14.0 (Atmosphere 1.4.0)
v1.13.0 (Atmosphere 1.3.1)
v1.12.0 (Atmosphere 1.2.5)
v1.11.0 (Atmosphere 1.2.1/1.2.2)
v1.10.0 (Atmosphere 1.1.1)
v1.9.0 (Atmosphere 1.0.0)
v1.8.0 (Atmosphere 0.19/0.19.1)
v1.7.0 (Atmosphere 0.16.1/0.16.2/0.17.0/0.18.0/0.18.1)
v1.6.0 (Atmosphere 0.15.0/0.14.4)
v1.5.0 (Atmosphere 0.14.0/0.14.1)
v1.4.0 (Atmosphere 0.13)
v1.3.4 (Atmosphere 0.11/0.12)
v1.3.3 (Atmosphere 0.10)

Changelog

v1.23.0 This release has support for 21.1.0 and fixes a crashing issue in some titles v1.22.0

• Version 1.22.0, adds basic support for Atmosphere 1.9.5 and FW 20.5.0

v1.21.0

• Version 1.21, adds basic support for Atmosphere 1.9.4 and FW 20.4.0

v1.20.0

• submodule: bump Atmosphere-libs from af10bca to bc7a0fc by @dependabot[bot] in #210

v1.19.0

• submodule: bump Atmosphere-libs from 0f72b2c to af10bca by @dependabot[bot] in #207

v1.18.0

• Update README.md by @impeeza in #196
• Ver Bump to support 20+ FWs, and fixed Build Steps by @MasonT8198 in #199
• nightly.yml: Fix Nightly Builds by @MasonT8198 in #201

External links

• GitHub - https://github.com/spacemeowx2/ldn_mitm
• GitHub - https://github.com/DefenderOfHyrule/ldn_mitm
• GBAtemp - https://gbatemp.net/threads/ldn_mitm-play-local-wireless-supported-games-online.525512/
• Discord - https://discord.gg/K9WFGSH