ldn_mitm - Team-Neptune/DeepSea GitHub Wiki

Whether lurking on an older firmware, banned from online activities, or unwilling to fork out for Nintendo's Switch Online, a lot of us find ourselves stuck in the void of single-player gaming. The release of switch-lan-play opened doors previously closed, allowing us to play a select list of games online regardless of bans and subscriptions. Taking another step forwards, we have ldn_mitm: a custom kip to break the final chains, to allow almost every game supporting local wireless to be enjoyed online.

For a list of supported games, check here.

To play with your friends, you and your friends should run lan-play client connecting to the same Server on your PC, and set static IP on your Switch.

Your PC and Switch must be connected to the same router.

1. Download and run latest Npcap installer.
2. Must check Installed in WinPcap API-compatible mode. in Npcap installation wizard.
3. Download the latest lan-play.exe from releases
4. Run lan-play.exe

After that, you will prompted to enter a server as shown below:

--relay-server-addr is required
Input the relay server address [ domain/ip:port ]:

You can find a list with public servers here: https://www.lan-play.com
Optionally you can go to the Switch Lan Play Discord to find people to match make: https://discord.gg/zEMCu5n

1. Make sure lan-play client is running.
2. Go to your Switch settings page, set the IP address to static. The IP address can be any from 10.13.0.1 to 10.13.255.254, excepting 10.13.37.1. But don't use the same IP address with your friend.

   IP Address	10.13.?.?
   Subnet Mask	255.255.0.0
   Gateway	10.13.37.1

3. Click save. Your Switch now can access the Internet via your PC.
4. Launch your game, hold L+R+LStick to enter lan-play mode. Host or join a game, enjoy!