 {
            const restrictions = [];
            
            // Test for mDNS candidates (privacy mode)
            const testConfig = {
                iceServers: [{urls: 'stun:stun.l.google.com:19302'}]
            };
            
            try {
                const testPc = new RTCPeerConnection(testConfig);
                const testDc = testPc.createDataChannel('test');
                
                let foundHost = false;
                let foundSrflx = false;
                let foundMdns