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diff --git a/lib/asio/ip/address_v6_range.hpp b/lib/asio/ip/address_v6_range.hpp
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+++ b/lib/asio/ip/address_v6_range.hpp
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+//
+// ip/address_v6_range.hpp
+// ~~~~~~~~~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+//                         Oliver Kowalke (oliver dot kowalke at gmail dot com)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#ifndef ASIO_IP_ADDRESS_V6_RANGE_HPP
+#define ASIO_IP_ADDRESS_V6_RANGE_HPP
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1200)
+# pragma once
+#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
+
+#include "asio/detail/config.hpp"
+#include "asio/ip/address_v6_iterator.hpp"
+
+#include "asio/detail/push_options.hpp"
+
+namespace asio {
+namespace ip {
+
+template <typename> class basic_address_range;
+
+/// Represents a range of IPv6 addresses.
+/**
+ * @par Thread Safety
+ * @e Distinct @e objects: Safe.@n
+ * @e Shared @e objects: Unsafe.
+ */
+template <> class basic_address_range<address_v6>
+{
+public:
+  /// The type of an iterator that points into the range.
+  typedef basic_address_iterator<address_v6> iterator;
+
+  /// Construct an empty range.
+  basic_address_range() ASIO_NOEXCEPT
+    : begin_(address_v6()),
+      end_(address_v6())
+  {
+  }
+
+  /// Construct an range that represents the given range of addresses.
+  explicit basic_address_range(const iterator& first,
+      const iterator& last) ASIO_NOEXCEPT
+    : begin_(first),
+      end_(last)
+  {
+  }
+
+  /// Copy constructor.
+  basic_address_range(const basic_address_range& other) ASIO_NOEXCEPT
+    : begin_(other.begin_),
+      end_(other.end_)
+  {
+  }
+
+#if defined(ASIO_HAS_MOVE)
+  /// Move constructor.
+  basic_address_range(basic_address_range&& other) ASIO_NOEXCEPT
+    : begin_(ASIO_MOVE_CAST(iterator)(other.begin_)),
+      end_(ASIO_MOVE_CAST(iterator)(other.end_))
+  {
+  }
+#endif // defined(ASIO_HAS_MOVE)
+
+  /// Assignment operator.
+  basic_address_range& operator=(
+      const basic_address_range& other) ASIO_NOEXCEPT
+  {
+    begin_ = other.begin_;
+    end_ = other.end_;
+    return *this;
+  }
+
+#if defined(ASIO_HAS_MOVE)
+  /// Move assignment operator.
+  basic_address_range& operator=(
+      basic_address_range&& other) ASIO_NOEXCEPT
+  {
+    begin_ = ASIO_MOVE_CAST(iterator)(other.begin_);
+    end_ = ASIO_MOVE_CAST(iterator)(other.end_);
+    return *this;
+  }
+#endif // defined(ASIO_HAS_MOVE)
+
+  /// Obtain an iterator that points to the start of the range.
+  iterator begin() const ASIO_NOEXCEPT
+  {
+    return begin_;
+  }
+
+  /// Obtain an iterator that points to the end of the range.
+  iterator end() const ASIO_NOEXCEPT
+  {
+    return end_;
+  }
+
+  /// Determine whether the range is empty.
+  bool empty() const ASIO_NOEXCEPT
+  {
+    return begin_ == end_;
+  }
+
+  /// Find an address in the range.
+  iterator find(const address_v6& addr) const ASIO_NOEXCEPT
+  {
+    return addr >= *begin_ && addr < *end_ ? iterator(addr) : end_;
+  }
+
+private:
+  iterator begin_;
+  iterator end_;
+};
+
+/// Represents a range of IPv6 addresses.
+typedef basic_address_range<address_v6> address_v6_range;
+
+} // namespace ip
+} // namespace asio
+
+#include "asio/detail/pop_options.hpp"
+
+#endif // ASIO_IP_ADDRESS_V6_RANGE_HPP