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diff --git a/inc/3rdparty/simplepie/SimplePie/Net/IPv6.php b/inc/3rdparty/simplepie/SimplePie/Net/IPv6.php
new file mode 100644
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+++ b/inc/3rdparty/simplepie/SimplePie/Net/IPv6.php
@@ -0,0 +1,258 @@
+<?php
+/**
+ * SimplePie
+ *
+ * A PHP-Based RSS and Atom Feed Framework.
+ * Takes the hard work out of managing a complete RSS/Atom solution.
+ *
+ * Copyright (c) 2004-2009, Ryan Parman, Geoffrey Sneddon, Ryan McCue, and contributors
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ *      * Redistributions of source code must retain the above copyright notice, this list of
+ *        conditions and the following disclaimer.
+ *
+ *      * Redistributions in binary form must reproduce the above copyright notice, this list
+ *        of conditions and the following disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ *      * Neither the name of the SimplePie Team nor the names of its contributors may be used
+ *        to endorse or promote products derived from this software without specific prior
+ *        written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS
+ * AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * @package SimplePie
+ * @version 1.3-dev
+ * @copyright 2004-2010 Ryan Parman, Geoffrey Sneddon, Ryan McCue
+ * @author Ryan Parman
+ * @author Geoffrey Sneddon
+ * @author Ryan McCue
+ * @link http://simplepie.org/ SimplePie
+ * @license http://www.opensource.org/licenses/bsd-license.php BSD License
+ * @todo phpDoc comments
+ */
+
+
+/**
+ * Class to validate and to work with IPv6 addresses.
+ *
+ * @package SimplePie
+ * @copyright 2003-2005 The PHP Group
+ * @license http://www.opensource.org/licenses/bsd-license.php
+ * @link http://pear.php.net/package/Net_IPv6
+ * @author Alexander Merz <alexander.merz@web.de>
+ * @author elfrink at introweb dot nl
+ * @author Josh Peck <jmp at joshpeck dot org>
+ * @author Geoffrey Sneddon <geoffers@gmail.com>
+ */
+class SimplePie_Net_IPv6
+{
+        /**
+         * Removes a possible existing netmask specification of an IP address.
+         *
+         * @param string $ip the (compressed) IP as Hex representation
+         * @return string the IP the without netmask
+         * @since 1.1.0
+         * @access public
+         * @static
+         */
+        public static function removeNetmaskSpec($ip)
+        {
+                if (strpos($ip, '/') !== false)
+                {
+                        list($addr, $nm) = explode('/', $ip);
+                }
+                else
+                {
+                        $addr = $ip;
+                }
+                return $addr;
+        }
+
+        /**
+         * Uncompresses an IPv6 address
+         *
+         * RFC 2373 allows you to compress zeros in an address to '::'. This
+         * function expects an valid IPv6 address and expands the '::' to
+         * the required zeros.
+         *
+         * Example:      FF01::101      ->      FF01:0:0:0:0:0:0:101
+         *                       ::1            ->      0:0:0:0:0:0:0:1
+         *
+         * @access public
+         * @static
+         * @param string $ip a valid IPv6-address (hex format)
+         * @return string the uncompressed IPv6-address (hex format)
+         */
+        public static function Uncompress($ip)
+        {
+                $uip = SimplePie_Net_IPv6::removeNetmaskSpec($ip);
+                $c1 = -1;
+                $c2 = -1;
+                if (strpos($ip, '::') !== false)
+                {
+                        list($ip1, $ip2) = explode('::', $ip);
+                        if ($ip1 === '')
+                        {
+                                $c1 = -1;
+                        }
+                        else
+                        {
+                                $pos = 0;
+                                if (($pos = substr_count($ip1, ':')) > 0)
+                                {
+                                        $c1 = $pos;
+                                }
+                                else
+                                {
+                                        $c1 = 0;
+                                }
+                        }
+                        if ($ip2 === '')
+                        {
+                                $c2 = -1;
+                        }
+                        else
+                        {
+                                $pos = 0;
+                                if (($pos = substr_count($ip2, ':')) > 0)
+                                {
+                                        $c2 = $pos;
+                                }
+                                else
+                                {
+                                        $c2 = 0;
+                                }
+                        }
+                        if (strstr($ip2, '.'))
+                        {
+                                $c2++;
+                        }
+                        // ::
+                        if ($c1 === -1 && $c2 === -1)
+                        {
+                                $uip = '0:0:0:0:0:0:0:0';
+                        }
+                        // ::xxx
+                        else if ($c1 === -1)
+                        {
+                                $fill = str_repeat('0:', 7 - $c2);
+                                $uip =  str_replace('::', $fill, $uip);
+                        }
+                        // xxx::
+                        else if ($c2 === -1)
+                        {
+                                $fill = str_repeat(':0', 7 - $c1);
+                                $uip =  str_replace('::', $fill, $uip);
+                        }
+                        // xxx::xxx
+                        else
+                        {
+                                $fill = str_repeat(':0:', 6 - $c2 - $c1);
+                                $uip =  str_replace('::', $fill, $uip);
+                                $uip =  str_replace('::', ':', $uip);
+                        }
+                }
+                return $uip;
+        }
+
+        /**
+         * Splits an IPv6 address into the IPv6 and a possible IPv4 part
+         *
+         * RFC 2373 allows you to note the last two parts of an IPv6 address as
+         * an IPv4 compatible address
+         *
+         * Example:      0:0:0:0:0:0:13.1.68.3
+         *                       0:0:0:0:0:FFFF:129.144.52.38
+         *
+         * @access public
+         * @static
+         * @param string $ip a valid IPv6-address (hex format)
+         * @return array [0] contains the IPv6 part, [1] the IPv4 part (hex format)
+         */
+        public static function SplitV64($ip)
+        {
+                $ip = SimplePie_Net_IPv6::Uncompress($ip);
+                if (strstr($ip, '.'))
+                {
+                        $pos = strrpos($ip, ':');
+                        $ip[$pos] = '_';
+                        $ipPart = explode('_', $ip);
+                        return $ipPart;
+                }
+                else
+                {
+                        return array($ip, '');
+                }
+        }
+
+        /**
+         * Checks an IPv6 address
+         *
+         * Checks if the given IP is IPv6-compatible
+         *
+         * @access public
+         * @static
+         * @param string $ip a valid IPv6-address
+         * @return bool true if $ip is an IPv6 address
+         */
+        public static function checkIPv6($ip)
+        {
+                $ipPart = SimplePie_Net_IPv6::SplitV64($ip);
+                $count = 0;
+                if (!empty($ipPart[0]))
+                {
+                        $ipv6 = explode(':', $ipPart[0]);
+                        for ($i = 0; $i < count($ipv6); $i++)
+                        {
+                                $dec = hexdec($ipv6[$i]);
+                                $hex = strtoupper(preg_replace('/^[0]{1,3}(.*[0-9a-fA-F])$/', '\\1', $ipv6[$i]));
+                                if ($ipv6[$i] >= 0 && $dec <= 65535 && $hex === strtoupper(dechex($dec)))
+                                {
+                                        $count++;
+                                }
+                        }
+                        if ($count === 8)
+                        {
+                                return true;
+                        }
+                        elseif ($count === 6 && !empty($ipPart[1]))
+                        {
+                                $ipv4 = explode('.', $ipPart[1]);
+                                $count = 0;
+                                foreach ($ipv4 as $ipv4_part)
+                                {
+                                        if ($ipv4_part >= 0 && $ipv4_part <= 255 && preg_match('/^\d{1,3}$/', $ipv4_part))
+                                        {
+                                                $count++;
+                                        }
+                                }
+                                if ($count === 4)
+                                {
+                                        return true;
+                                }
+                        }
+                        else
+                        {
+                                return false;
+                        }
+
+                }
+                else
+                {
+                        return false;
+                }
+        }
+}
+