add optional client profile MTU var

README.md

@@ -73,5 +73,6 @@ These options can be configured in `docker-compose.yml` under `environment`.
 | `WG_PORT` | `51820` | `51820` | The public UDP port of your VPN server |
 | `WG_DEFAULT_ADDRESS` | `10.8.0.x` | `10.6.0.x` | Clients IP address range |
 | `WG_DEFAULT_DNS` | `1.1.1.1` | `8.8.8.8, 8.8.4.4` | DNS server clients will use |
+| `WG_MTU` | `null` | `1420` | The MTU the clients will use. (Server uses default WG MTU) |
 
 > If you change `WG_PORT`, make sure to also change the exposed port.

docker-compose.yml

@@ -11,6 +11,7 @@ services:
       # - WG_PORT=51820
       # - WG_DEFAULT_ADDRESS=10.8.0.x
       # - WG_DEFAULT_DNS=1.1.1.1
+      # - WG_MTU=1420
       
     image: weejewel/wg-easy
     container_name: wg-easy

src/config.js

@@ -5,5 +5,6 @@ module.exports.PASSWORD = process.env.PASSWORD;
 module.exports.WG_PATH = process.env.WG_PATH || '/etc/wireguard/';
 module.exports.WG_HOST = process.env.WG_HOST;
 module.exports.WG_PORT = process.env.WG_PORT || 51820;
+module.exports.WG_MTU = process.env.WG_MTU || null;
 module.exports.WG_DEFAULT_ADDRESS = process.env.WG_DEFAULT_ADDRESS || '10.8.0.x';
 module.exports.WG_DEFAULT_DNS = process.env.WG_DEFAULT_DNS || '1.1.1.1';

src/lib/WireGuard.js

@@ -14,6 +14,7 @@ const {
   WG_PATH,
   WG_HOST,
   WG_PORT,
+  WG_MTU,
   WG_DEFAULT_DNS,
   WG_DEFAULT_ADDRESS,
 } = require('../config');
@@ -174,6 +175,9 @@ AllowedIPs = ${client.address}/32`;
 PrivateKey = ${client.privateKey}
 Address = ${client.address}/24
 DNS = ${WG_DEFAULT_DNS}
+if (typeof ${WG_MTU} !== 'undefined' || ${WG_MTU} !== null) {
+MTU = ${WG_MTU}
+}
 
 [Peer]
 PublicKey = ${config.server.publicKey}