diff --git a/ws2012/P2P/uebungen/4/src/node/Node.java b/ws2012/P2P/uebungen/4/src/node/Node.java
index d25f2823..05e6aedc 100644
--- a/ws2012/P2P/uebungen/4/src/node/Node.java
+++ b/ws2012/P2P/uebungen/4/src/node/Node.java
@@ -29,6 +29,11 @@ public class Node {
 
     private Map<Integer, Ack> acks = new HashMap<Integer, Ack>();
 
+    /**
+     * Saves the neighbor of each node in the network
+     */
+    private Map<String, List<String>> network = new HashMap<>();
+
 	private volatile Thread thread;
 	private UDPHandler udpListen;