req = r;
            } else {
                if (!th.hasCapability(SmbConstants.CAP_NT_SMBS)) {
                    throw new SmbUnsupportedOperationException("Not supported without CAP_NT_SMBS");
                }

                /*
                 * NtTrans Notify Change Request / Response
                 */

        buffer.putInt(8192); // maxBufferSize
        buffer.putInt(65536); // maxRawSize
        buffer.putInt(123456789); // sessionKey
        buffer.putInt(SmbConstants.CAP_UNICODE | SmbConstants.CAP_NT_SMBS); // capabilities
        buffer.putLong(new Date().getTime()); // serverTime
        buffer.putShort((short) -480); // serverTimeZone
        buffer.put((byte) 8); // encryptionKeyLength

        // Configure mock transport
        mockTransport.server = serverData;
        mockTransport.sessionKey = 0x12345678;
        mockTransport.capabilities = SmbConstants.CAP_UNICODE | SmbConstants.CAP_NT_SMBS;
        mockTransport.snd_buf_size = 16644;
        mockTransport.maxMpxCount = 50;

        // Configure mock session
        mockSession.transport = mockTransport;

    @DisplayName("Capability flags are correct")
    void capabilityFlagsTest() {
        // Test individual capability values
        assertEquals(0x0004, SmbConstants.CAP_UNICODE);
        assertEquals(0x0010, SmbConstants.CAP_NT_SMBS);
        assertEquals(0x0040, SmbConstants.CAP_STATUS32);
        assertEquals(0x1000, SmbConstants.CAP_DFS);
        assertEquals(0x80000000, SmbConstants.CAP_EXTENDED_SECURITY);
    }

    /**