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diff --git a/src/network/kernel/qhostaddress.h b/src/network/kernel/qhostaddress.h
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+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtNetwork module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QHOSTADDRESS_H
+#define QHOSTADDRESS_H
+
+#include <QtCore/qpair.h>
+#include <QtCore/qstring.h>
+#include <QtCore/qscopedpointer.h>
+#include <QtNetwork/qabstractsocket.h>
+
+struct sockaddr;
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Network)
+
+class QHostAddressPrivate;
+
+class Q_NETWORK_EXPORT QIPv6Address
+{
+public:
+    inline quint8 &operator [](int index) { return c[index]; }
+    inline quint8 operator [](int index) const { return c[index]; }
+    quint8 c[16];
+};
+
+typedef QIPv6Address Q_IPV6ADDR;
+
+class Q_NETWORK_EXPORT QHostAddress
+{
+public:
+    enum SpecialAddress {
+        Null,
+        Broadcast,
+        LocalHost,
+        LocalHostIPv6,
+        Any,
+        AnyIPv6
+    };
+
+    QHostAddress();
+    explicit QHostAddress(quint32 ip4Addr);
+    explicit QHostAddress(quint8 *ip6Addr);
+    explicit QHostAddress(const Q_IPV6ADDR &ip6Addr);
+    explicit QHostAddress(const sockaddr *sockaddr);
+    explicit QHostAddress(const QString &address);
+    QHostAddress(const QHostAddress &copy);
+    QHostAddress(SpecialAddress address);
+    ~QHostAddress();
+
+    QHostAddress &operator=(const QHostAddress &other);
+    QHostAddress &operator=(const QString &address);
+
+    void setAddress(quint32 ip4Addr);
+    void setAddress(quint8 *ip6Addr);
+    void setAddress(const Q_IPV6ADDR &ip6Addr);
+    void setAddress(const sockaddr *sockaddr);
+    bool setAddress(const QString &address);
+
+    QAbstractSocket::NetworkLayerProtocol protocol() const;
+    quint32 toIPv4Address() const;
+    Q_IPV6ADDR toIPv6Address() const;
+
+    QString toString() const;
+
+    QString scopeId() const;
+    void setScopeId(const QString &id);
+
+    bool operator ==(const QHostAddress &address) const;
+    bool operator ==(SpecialAddress address) const;
+    inline bool operator !=(const QHostAddress &address) const
+    { return !operator==(address); }
+    inline bool operator !=(SpecialAddress address) const
+    { return !operator==(address); }
+    bool isNull() const;
+    void clear();
+
+#ifdef QT3_SUPPORT
+    inline QT3_SUPPORT quint32 ip4Addr() const { return toIPv4Address(); }
+    inline QT3_SUPPORT bool isIPv4Address() const { return protocol() == QAbstractSocket::IPv4Protocol
+                                                      || protocol() == QAbstractSocket::UnknownNetworkLayerProtocol; }
+    inline QT3_SUPPORT bool isIp4Addr() const  { return protocol() == QAbstractSocket::IPv4Protocol
+                                                      || protocol() == QAbstractSocket::UnknownNetworkLayerProtocol; }
+    inline QT3_SUPPORT bool isIPv6Address() const { return protocol() == QAbstractSocket::IPv6Protocol; }
+#endif
+
+    bool isInSubnet(const QHostAddress &subnet, int netmask) const;
+    bool isInSubnet(const QPair<QHostAddress, int> &subnet) const;
+
+    static QPair<QHostAddress, int> parseSubnet(const QString &subnet);
+
+protected:
+    QScopedPointer<QHostAddressPrivate> d;
+};
+
+inline bool operator ==(QHostAddress::SpecialAddress address1, const QHostAddress &address2)
+{ return address2 == address1; }
+
+#ifndef QT_NO_DEBUG_STREAM
+Q_NETWORK_EXPORT QDebug operator<<(QDebug, const QHostAddress &);
+#endif
+
+
+Q_NETWORK_EXPORT uint qHash(const QHostAddress &key);
+
+#ifndef QT_NO_DATASTREAM
+Q_NETWORK_EXPORT QDataStream &operator<<(QDataStream &, const QHostAddress &);
+Q_NETWORK_EXPORT QDataStream &operator>>(QDataStream &, QHostAddress &);
+#endif
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+#endif // QHOSTADDRESS_H