proxy arp functional; needs testing

Change-Id: Ib948ec3eac07d2650becf720a9c3c5ca014a0994
diff --git a/core/net/src/main/java/org/onlab/onos/net/proxyarp/impl/package-info.java b/core/net/src/main/java/org/onlab/onos/net/proxyarp/impl/package-info.java
new file mode 100644
index 0000000..53830bc
--- /dev/null
+++ b/core/net/src/main/java/org/onlab/onos/net/proxyarp/impl/package-info.java
@@ -0,0 +1,4 @@
+/**
+ * Core subsystem for responding to arp requests.
+ */
+package org.onlab.onos.net.proxyarp.impl;
\ No newline at end of file