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diff --git a/node/SelfAwareness.hpp b/node/SelfAwareness.hpp
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+/*
+ * ZeroTier One - Network Virtualization Everywhere
+ * Copyright (C) 2011-2015  ZeroTier, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --
+ *
+ * ZeroTier may be used and distributed under the terms of the GPLv3, which
+ * are available at: http://www.gnu.org/licenses/gpl-3.0.html
+ *
+ * If you would like to embed ZeroTier into a commercial application or
+ * redistribute it in a modified binary form, please contact ZeroTier Networks
+ * LLC. Start here: http://www.zerotier.com/
+ */
+
+#ifndef ZT_SELFAWARENESS_HPP
+#define ZT_SELFAWARENESS_HPP
+
+#include "InetAddress.hpp"
+
+namespace ZeroTier {
+
+class RuntimeEnvironment;
+
+/**
+ * Tracks changes to this peer's real world addresses
+ */
+class SelfAwareness
+{
+public:
+	SelfAwareness(const RuntimeEnvironment *renv);
+	~SelfAwareness();
+
+	/**
+	 * Called when a trusted remote peer informs us of our external network address
+	 *
+	 * @param physicalAddress Physical address as reflected by any trusted peer
+	 */
+	void iam(const InetAddress &physicalAddress);
+
+private:
+};
+
+} // namespace ZeroTier
+
+#endif