Replicate peer endpoints and forget paths if we have them -- this allows two clusters to talk to each other, whereas forgetting all paths does not.

node/Peer.hpp

@@ -412,6 +412,25 @@ public:
 	 */
 	void clean(const RuntimeEnvironment *RR,uint64_t now);
 
+	/**
+	 * Remove all paths with this remote address
+	 *
+	 * @param addr Remote address to remove
+	 */
+	inline void removePathByAddress(const InetAddress &addr)
+	{
+		Mutex::Lock _l(_lock);
+		unsigned int np = _numPaths;
+		unsigned int x = 0;
+		unsigned int y = 0;
+		while (x < np) {
+			if (_paths[x].address() != addr)
+				_paths[y++] = _paths[x];
+			++x;
+		}
+		_numPaths = y;
+	}
+
 	/**
 	 * Find a common set of addresses by which two peers can link, if any
 	 *