--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/networkprotocols/tcpipv4v6prt/src/addr46.cpp	Tue Jan 26 15:23:49 2010 +0200
@@ -0,0 +1,90 @@
+// Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of "Eclipse Public License v1.0"
+// which accompanies this distribution, and is available
+// at the URL "http://www.eclipse.org/legal/epl-v10.html".
+//
+// Initial Contributors:
+// Nokia Corporation - initial contribution.
+//
+// Contributors:
+//
+// Description:
+// addr46.cpp - an extention to TIp6Addr
+//
+
+#include "addr46.h"
+
+static const union {TUint8 a[4]; TUint32 b;} v4Prefix = { {0, 0, 0xff, 0xff} };
+
+//
+// TIp46Addr::TIp46Addr
+// ********************
+// Construct TIp6Addr as IPv4 mapped address from IPv4 address
+//
+TIp46Addr::TIp46Addr(const TUint32 aAddr)
+	{
+	u.iAddr32[0] = 0;
+	u.iAddr32[1] = 0;
+	u.iAddr32[2] = v4Prefix.b;
+	u.iAddr8[15] = (TUint8)aAddr;
+	u.iAddr8[14] = (TUint8)(aAddr >>  8);
+	u.iAddr8[13] = (TUint8)(aAddr >> 16);
+	u.iAddr8[12] = (TUint8)(aAddr >> 24);
+	}
+//
+// Construct TIp6Adr from generic TInetAddr,
+//
+TIp46Addr::TIp46Addr(const TInetAddr &aAddr)
+	{
+	if (aAddr.Family() == KAfInet6)
+		(*(TIp6Addr *)this) = aAddr.Ip6Address();
+	else if (aAddr.Family() == KAfInet)
+		(*(TIp6Addr *)this) = TIp46Addr(aAddr.Address());
+	else
+		(*(TIp6Addr *)this) = KInet6AddrNone;
+	}
+
+
+//
+// TIp46Addr::IsMulticast
+// **********************
+// Return TRUE if address is IPv4 or IPv6 multicast
+//
+TBool TIp46Addr::IsMulticast() const
+	{
+	// TRUE, if real IPv6 multicast
+	if (TIp6Addr::IsMulticast())
+		return TRUE;
+	//
+	// Otherwise, return TRUE, if address is the IPv4
+	// multicast address.
+	return
+		u.iAddr32[0] == 0 &&
+		u.iAddr32[1] == 0 &&
+		u.iAddr32[2] == v4Prefix.b &&
+		(u.iAddr8[12] & 0xF0) == 0xE0;
+	}
+
+//
+// TIp46Addr::IsLinklocal
+// **********************
+// Return TRUE if address is IPv4 or IPv6 multicast
+//
+TBool TIp46Addr::IsLinkLocal() const
+	{
+	return Scope() == KIp6AddrScopeLinkLocal;
+	}
+
+
+// TIp46Addr::IsUnspecified
+// ************************
+TBool TIp46Addr::IsUnspecified() const
+	{
+	return
+		u.iAddr32[0] == 0 &&
+		u.iAddr32[1] == 0 &&
+		(u.iAddr32[2] == 0 || u.iAddr32[2] == v4Prefix.b) &&
+		u.iAddr32[3] == 0;
+	}