Async frame receive/send module

Change-Id: I75b6ecdecf05f2c72b3b0fa1191d849b7d8e67ef
diff --git a/requirements.txt b/requirements.txt
index ade7f69..cbdf9c1 100755
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,6 +15,7 @@
 nose-exclude>=0.5.0
 mock>=1.3.0
 netifaces>=0.10.4
+pcapy>=0.10.10
 pep8>=1.5.7
 pep8-naming>=0.3.3
 protobuf-to-dict>=0.1.0