Implemented a mechanism to remember ARP requests and answer them when the response is received
diff --git a/src/main/java/net/onrc/onos/ofcontroller/proxyarp/IArpRequester.java b/src/main/java/net/onrc/onos/ofcontroller/proxyarp/IArpRequester.java
new file mode 100644
index 0000000..2a74944
--- /dev/null
+++ b/src/main/java/net/onrc/onos/ofcontroller/proxyarp/IArpRequester.java
@@ -0,0 +1,5 @@
+package net.onrc.onos.ofcontroller.proxyarp;
+
+public interface IArpRequester {
+	public void arpResponse(byte[] mac);
+}