fix: disabling IPv6 support may fix DSCP fields absence

android/src/main/kotlin/xyz/nuark/liblinphone_flutter/LinphoneBridge.kt

@@ -201,6 +201,10 @@ class LinphoneBridge(
         core = factory.createCore(null, null, activity.baseContext)
         core.addListener(coreListener)
 
+	core.isIpv6Enabled = false
+	core.config.setInt("net", "ipv6", 0)
+	core.config.sync()
+
         // Enable video
         core.isVideoCaptureEnabled = true
         core.isVideoDisplayEnabled = true
@@ -360,4 +364,4 @@ class LinphoneBridge(
         }
         return CallType.Unknown
     }
-}
+}

ios/Classes/LinphoneBridge.swift

@@ -58,7 +58,11 @@ class LinphoneBridge {
         do {
             let factory = Factory.Instance
             core = try factory.createCore(configPath: nil, factoryConfigPath: nil, systemContext: nil)
-            
+           
+            code.ipv6Enabled = false
+            core.config?.setInt("net", "ipv6", 0)
+            core.config?.sync()
+
             // Add core listener
             core.addDelegate(delegate: self)