Fixes - WebUI unreachable via IPv6 (#1871)

Author: Lord-Grey

CHANGELOG.md

@@ -6,6 +6,17 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased](https://github.com/hyperion-project/hyperion.ng/compare/2.1.0...HEAD)
 
+### ⚠️ Breaking Changes
+
+### ✨ Added
+
+### 🔧 Changed
+
+- **Fixes:**
+  - WebUI unreachable via IPv6 (#1871)
+
+### 🗑️ Removed
+
 ## [2.1.0](https://github.com/hyperion-project/hyperion.ng/releases/tag/2.1.0) - 2025-06-12
 
 ### ⚠️ Breaking Changes

libsrc/utils/NetOrigin.cpp

@@ -58,31 +58,34 @@ bool NetOrigin::isLocalAddress(const QHostAddress& ipAddress, const QHostAddress
 		return true;
 	}
 
-	//Convert to IPv4 to check, if an IPv6 address is an IPv4 mapped address
-	QHostAddress ipv4Address(address.toIPv4Address());
-	if (ipv4Address != QHostAddress::AnyIPv4) // ipv4Address is not "0.0.0.0"
+	// Convert IPv4-mapped IPv6 to pure IPv4
+	QHostAddress const ipv4Address(address.toIPv4Address());
+	if (ipv4Address != QHostAddress::AnyIPv4)
 	{
 		address = ipv4Address;
 	}
 
-	QList<QNetworkInterface> allInterfaces = QNetworkInterface::allInterfaces();
-	for (const QNetworkInterface &networkInterface : allInterfaces) {
-		QList<QNetworkAddressEntry> addressEntries = networkInterface.addressEntries();
-		for (const QNetworkAddressEntry &localNetworkAddressEntry : addressEntries) {
-			QHostAddress localIP = localNetworkAddressEntry.ip();
+	QList<QNetworkInterface> const allInterfaces = QNetworkInterface::allInterfaces();
+	for (const QNetworkInterface &networkInterface : allInterfaces)
+	{
+		QList<QNetworkAddressEntry> const addressEntries = networkInterface.addressEntries();
+		for (const QNetworkAddressEntry &localNetworkAddressEntry : addressEntries)
+		{
+			QHostAddress const localIP = localNetworkAddressEntry.ip();
 
-			if(localIP.protocol() != QAbstractSocket::NetworkLayerProtocol::IPv4Protocol)
+			// Skip protocol mismatch
+			if (localIP.protocol() != address.protocol())
 			{
 				continue;
 			}
 
-			bool isInSubnet = address.isInSubnet(localIP, localNetworkAddressEntry.prefixLength());
-			if (isInSubnet)
+			if (address.isInSubnet(localIP, localNetworkAddressEntry.prefixLength()))
 			{
 				return true;
 			}
 		}
 	}
+
 	return false;
 }