diff --git a/tests/actions.py b/tests/actions.py
index 494d941..2791d5a 100644
--- a/tests/actions.py
+++ b/tests/actions.py
@@ -396,6 +396,7 @@
         pkt_out =ofp.message.packet_out();
         pkt_out.data = str(pkt)
         pkt_out.in_port = of_ports[0]
+        pkt_out.buffer_id = 0xffffffff
         act = ofp.action.output()
         act.port = ofp.OFPP_TABLE
         pkt_out.actions.append(act)
diff --git a/tests/basic.py b/tests/basic.py
index 66e0355..5312c1a 100644
--- a/tests/basic.py
+++ b/tests/basic.py
@@ -169,7 +169,8 @@
                logging.info("PKT OUT test with %s, port %s" % (opt, dp_port))
                msg = ofp.message.packet_out(in_port=ofp.OFPP_NONE,
                                         data=str(outpkt),
-                                        actions=[ofp.action.output(port=dp_port)])
+                                        actions=[ofp.action.output(port=dp_port)],
+                                        buffer_id=0xffffffff)
 
                logging.info("PacketOut to: " + str(dp_port))
                self.controller.message_send(msg)
@@ -222,7 +223,8 @@
                actions = [ofp.action.output(port=port) for port in dp_ports]
                msg = ofp.message.packet_out(in_port=ofp.OFPP_NONE,
                                         data=str(outpkt),
-                                        actions=actions)
+                                        actions=actions,
+                                        buffer_id=0xffffffff)
 
                logging.info("PacketOut to: " + str(dp_ports))
                self.controller.message_send(msg)
diff --git a/tests/load.py b/tests/load.py
index 4680edb..2631f36 100644
--- a/tests/load.py
+++ b/tests/load.py
@@ -79,6 +79,7 @@
         msg = ofp.message.packet_out()
         msg.in_port = lb_port
         msg.data = str(pkt)
+        msg.buffer_id = 0xffffffff
         act = ofp.action.output()
         act.port = lb_port + 1
         msg.actions.append(act)
@@ -171,6 +172,7 @@
                act = ofp.action.output()
                act.port = dp_port
                msg.actions.append(act)
+               msg.buffer_id = 0xffffffff
 
                logging.info("PacketOutLoad to: " + str(dp_port))
                for count in range(100):
diff --git a/tests/nicira_dec_ttl.py b/tests/nicira_dec_ttl.py
index f5e8214..b29f611 100644
--- a/tests/nicira_dec_ttl.py
+++ b/tests/nicira_dec_ttl.py
@@ -26,6 +26,7 @@
         outpkt = simple_tcp_packet(pktlen=100, ip_ttl=3)
         msg = ofp.message.packet_out(in_port=ofp.OFPP_NONE,
                                      data=str(outpkt),
+                                     buffer_id=x0xffffffff,
                                      actions=[
                                          ofp.action.nicira_dec_ttl(),
                                          ofp.action.output(port=portA),
diff --git a/tests/openflow_protocol_messages.py b/tests/openflow_protocol_messages.py
index c961f2e..b30da7c 100644
--- a/tests/openflow_protocol_messages.py
+++ b/tests/openflow_protocol_messages.py
@@ -222,6 +222,7 @@
                 act = ofp.action.output()
                 act.port = dp_port
                 msg.actions.append(act)
+                msg.buffer_id = 0xffffffff
 
                 logging.info("PacketOut to: " + str(dp_port))
                 self.controller.message_send(msg)