Add ZeroTier cab-to-cab guide

docs/extras/zerotier.md

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+<img class="header-logo" src="/img/extras/zerotier/logo.webp">
+
+# ZeroTier for Cabinet-to-Cabinet Play
+
+## Installing
+
+!!! tip ""
+
+    Go to the [ZeroTier download page](https://www.zerotier.com/download/). Download and run the Windows installer.  
+    After installation, the program will open automatically in your taskbar.
+
+## Joining a network
+
+!!! tip "Connecting to a network"
+
+    To join a network on ZeroTier, you will need its **16-digit Network ID**.
+
+    - Start ZeroTier if it's not already running
+    - Right click on the ZeroTier icon in your taskbar
+    - Click on "Join New Network"
+    - Enter the Network ID
+    - Click on "Join"
+
+    That's it!
+
+!!! info "Checking your connection"
+
+    Open your Command Prompt, and run the command `ipconfig`  
+    Your IP address will appear under `Ethernet adapter ZeroTier One [NETWORK ID]` next to `IPv4 Address`
+
+    <img src="/img/extras/zerotier/ipconfig.webp">
+
+    To check if you can successfully reach another computer on the network, run the command `ping [IPv4 Address]` replacing `[IPv4 Address]` with the IP address of the other computer, *not your own*.
+
+!!! tip "Configuration for segatools"
+
+    Edit `segatools.ini` with the following content:
+
+    ```
+    [netnev]
+    enable=1
+    addrSuffix= The last segment of your ZeroTier IP address (e.g., if your IP is 192.168.196.5, set addrSuffix = 5)
+    
+    [keychip]
+    subnet=192.168.196.0
+    ```
+
+    !!! warning "Each person must have their own keychip"
+
+        If you play on a remote network, you likely already have your own keychip.  
+        If not, you can use these example keychips: `A61E-01D02321145` ; `A61E-01A30831145` ; `A61E-01E38091145` ; `A61E-01E46241145`
+
+    If you're running a CHUNITHM version prior to Luminous:
+
+    ```
+    [system]
+    dipsw1=1 ;Set this to 1 on the host machine and set this to 0 on all others
+    ```
+
+    When starting your game, make sure to allow any Windows Firewall pop-ups (such as for `amdaemon.exe`, `mu3.exe`, `chusanApp.exe`...)
+
+    ??? info "If you didn't see a pop-up"
+
+        This could mean one of two things.
+
+        Either you have already allowed it, and cab-to-cab is working successfully. That's great! No need to change anything.  
+        Or, you denied access, and cab-to-cab isn't working. In that case follow these steps:
+
+        - Open the Windows Control Panel
+        - Click on `System and Security`
+        - Click on `Windows Defender Firewall`
+        - On the left side, click on `Advanced settings`
+        - In the new window, click on `Inbound Rules` and look for your game's executables
+        - Right click on one of them, then click on `Properties`
+        - Select `Allow the connection` then press `OK`
+        - Repeat this for all game executables
+
+!!! tip "Configuration for spice2x"
+
+    - Open `spicecfg.exe`
+    - Navigate to the `Development` tab
+    - Enter your ZeroTier IP in the `Preferred NetAdapter IP` field
+    - Enter `255.255.255.0` in the `Preferred NetAdapter Subnet` field
+
+## Creating a network
+
+!!! tip ""
+
+    - Go to [my.zerotier.com](https://my.zerotier.com/) and create an account
+    - Create a network
+    - Click on its name in the list to configure it
+
+!!! info "About your Network ID"
+
+    Your *Network ID* is displayed on your account's homepage, and in the configuration menu.  
+    This allows you and others to [join your network](#joining-a-network).
+
+    If your network is set to `Public` then **anyone** with it can join it. Treat it like a password.
+
+### Network configuration
+
+!!! info "Following tabs correspond to the ones found in the configuration menu, follow both "Basics" and "Advanced""
+
+=== "Basics"
+
+    !!! info "Name"
+
+        Either keep the default random name, or rename it to your liking.
+
+    !!! tip "Access Control"
+
+        - **Private**: This is the default option and will require you to accept people who want to join your network
+        - **Public**: ^^Recommended^^, anyone with the *Network ID* can join without authorization
+
+=== "Advanced"
+
+    !!! tip "Managed Routes"
+
+        Delete the already existing entry.  
+        Under "Add Routes", set "Destination" as `192.168.196.0/24` then press "Submit".
+
+    !!! tip "IPv4 Auto-Assign"
+
+        Head to the "Easy" tab, and choose `192.168.196.*`
+
+    !!! info ""
+    
+        You should end up with this:
+
+        <img align=left src="/img/extras/zerotier/config_advanced.webp">

mkdocs.yml

@@ -269,6 +269,7 @@ nav:
     - "Asphyxia": "extras/asphyxia.md"
     - "Audio": "extras/audio.md"
     - "Cab-to-cab (SoftEther)": "extras/softether.md"
+    - "Cab-to-cab (ZeroTier)": "extras/zerotier.md"
     - "Controllers": "extras/controllers.md"
     - "Modding (Bemani)": "extras/datamods.md"
     - "Modding (Unity)": "extras/unity.md"