diff --git a/ofdpa/dev.py b/ofdpa/dev.py
new file mode 100644
index 0000000..1a93957
--- /dev/null
+++ b/ofdpa/dev.py
@@ -0,0 +1,206 @@
+"""
+Flow Test
+Test each flow table can set entry, and packet rx correctly.
+1) L3UcastRoute
+2) QinQ
+"""
+
+import logging
+
+from oftest import config
+import oftest.base_tests as base_tests
+import ofp
+from oftest.testutils import *
+from accton_util import *
+
+class L3UcastRoute(base_tests.SimpleDataPlane):
+    """
+    Port1(vlan1, 0x00, 0x00, 0x00, 0x22, 0x22, 0x01, 192.168.1.1) , 
+    Port2(vlan2, 0x00, 0x00, 0x00, 0x22, 0x22, 0x02, 19.168.2.1)
+    """
+    def runTest(self):          
+        delete_all_flows(self.controller)
+        delete_all_groups(self.controller)
+
+        if len(config["port_map"]) <2:
+            logging.info("Port count less than 2, can't run this case")
+            return
+        
+        vlan_id=1
+        intf_src_mac=[0x00, 0x00, 0x00, 0xcc, 0xcc, 0xcc]
+        dst_mac=[0x00, 0x00, 0x00, 0x22, 0x22, 0x00]
+        dip=0xc0a80001
+        for port in config["port_map"].keys():
+            #add l2 interface group
+            add_one_l2_interface_grouop(self.controller, port, vlan_id=vlan_id, is_tagged=True, send_barrier=False)
+            dst_mac[5]=vlan_id
+            l3_msg=add_l3_unicast_group(self.controller, port, vlanid=vlan_id, id=vlan_id, src_mac=intf_src_mac, dst_mac=dst_mac)
+            #add vlan flow table
+            add_one_vlan_table_flow(self.controller, port, vlan_id, flag=VLAN_TABLE_FLAG_ONLY_BOTH)
+            #add termination flow
+            add_termination_flow(self.controller, port, 0x0800, intf_src_mac, vlan_id)           
+            #add unicast routing flow
+            dst_ip = dip + (vlan_id<<8)           
+            add_unicast_routing_flow(self.controller, 0x0800, dst_ip, 0, l3_msg.group_id)            
+            vlan_id += 1
+        
+        do_barrier(self.controller)  
+        
+        port1=config["port_map"].keys()[0]
+        port2=config["port_map"].keys()[1]
+        #port 1 to port 2        
+        switch_mac = ':'.join(['%02X' % x for x in intf_src_mac])
+        dst_mac[5]=1
+        port1_mac=':'.join(['%02X' % x for x in dst_mac])
+
+        parsed_pkt = simple_tcp_packet(pktlen=100, 
+                                       dl_vlan_enable=True,
+                                       vlan_vid=1,
+                                       eth_dst=switch_mac,
+                                       eth_src=port1_mac,
+                                       ip_ttl=64,
+                                       ip_src="192.168.1.1",
+                                       ip_dst='192.168.2.1')
+        pkt=str(parsed_pkt)
+        self.dataplane.send(port1, pkt)
+        #build expect packet
+        dst_mac[5]=2
+        port2_mac=':'.join(['%02X' % x for x in dst_mac])  
+        exp_pkt = simple_tcp_packet(pktlen=100,
+                                       dl_vlan_enable=True,
+                                       vlan_vid=2, 
+                                       eth_dst=port2_mac,
+                                       eth_src=switch_mac,
+                                       ip_ttl=63,
+                                       ip_src="192.168.1.1",
+                                       ip_dst='192.168.2.1')        
+        pkt=str(exp_pkt)
+        verify_packet(self, pkt, port2)
+        verify_no_other_packets(self)
+
+        #port 2 to port 1
+        switch_mac = ':'.join(['%02X' % x for x in intf_src_mac])
+        dst_mac[5]=2
+        port2_mac=':'.join(['%02X' % x for x in dst_mac])  
+
+        parsed_pkt = simple_tcp_packet(pktlen=100,
+                                       dl_vlan_enable=True,
+                                       vlan_vid=2, 
+                                       eth_dst=switch_mac,
+                                       eth_src=port2_mac,
+                                       ip_ttl=64,
+                                       ip_src="192.168.2.1",
+                                       ip_dst='192.168.1.1')
+        pkt=str(parsed_pkt)                                       
+        self.dataplane.send(port2, pkt)
+        #build expect packet
+        dst_mac[5]=1
+        port1_mac=':'.join(['%02X' % x for x in dst_mac])  
+        exp_pkt = simple_tcp_packet(pktlen=100,
+                                       dl_vlan_enable=True,
+                                       vlan_vid=1,
+                                       eth_dst=port1_mac,
+                                       eth_src=switch_mac,
+                                       ip_ttl=63,
+                                       ip_src="192.168.2.1",
+                                       ip_dst='192.168.1.1')        
+        pkt=str(exp_pkt) 
+        verify_packet(self, pkt, port1)
+        verify_no_other_packets(self)    
+
+
+class qinq(base_tests.SimpleDataPlane):
+    def runTest(self):
+        delete_all_flows(self.controller)
+        delete_all_groups(self.controller)   
+        
+        in_port = config["port_map"].keys()[0]
+        out_port = config["port_map"].keys()[1]        
+        out_vlan=10
+        #add_vlan_table_flow_pvid(self.controller, in_port, None, out_vlan, False)
+        add_vlan_table_flow_pvid(self.controller, in_port, 1,out_vlan, False)        
+        group_id, msg=add_one_l2_interface_grouop(self.controller, out_port, out_vlan,  True, False) 
+        #add acl 
+        match = ofp.match()
+        match.oxm_list.append(ofp.oxm.in_port(in_port))    
+        request = ofp.message.flow_add(
+                table_id=60,
+                cookie=42,
+                match=match,
+                instructions=[
+                    ofp.instruction.write_actions(
+                        actions=[
+                            ofp.action.group(msg.group_id)])
+                    ],
+                buffer_id=ofp.OFP_NO_BUFFER,
+                priority=1000) 
+        self.controller.message_send(request)  
+
+        #input tag packet
+        parsed_pkt = simple_tcp_packet(pktlen=104, dl_vlan_enable=True, vlan_vid=1)
+        pkt = str(parsed_pkt)
+        self.dataplane.send(in_port, pkt)
+    
+        parsed_pkt = simple_tcp_packet_two_vlan(pktlen=108, out_dl_vlan_enable=True, out_vlan_vid=10,
+                                                in_dl_vlan_enable=True, in_vlan_vid=1)
+        verify_packet(self, str(parsed_pkt), out_port)
+
+
+class FlowStats(base_tests.SimpleProtocol):
+    """
+    Flow stats multipart transaction
+    Only verifies we get a reply.
+    """
+    def runTest(self):
+        logging.info("Sending flow stats request")
+        stats = get_flow_stats(self, ofp.match())
+        logging.info("Received %d flow stats entries", len(stats))
+        for entry in stats:
+            logging.info(entry.show())
+
+
+class ACLStats(base_tests.SimpleProtocol):
+    """
+    Flow stats multipart transaction
+    Only verifies we get a reply.
+    """
+    def runTest(self):
+        logging.info("Installing ACL rule")
+        #delete_all_flows(self.controller)
+        #delete_all_groups(self.controller)
+
+        in_port = config["port_map"].keys()[0]
+        out_port=config["port_map"].keys()[1]
+        out_vlan=10
+        #add_vlan_table_flow_pvid(self.controller, in_port, None, out_vlan, False)
+        #add_vlan_table_flow_pvid(self.controller, in_port, 1,out_vlan, False)
+        group_id, msg=add_one_l2_interface_grouop(self.controller, out_port, out_vlan,  True, False)
+        inst=[ofp.instruction.write_actions(
+                        actions=[
+                            ofp.action.group(msg.group_id)])
+                    ],
+
+        #add acl
+        match = ofp.match()
+        match.oxm_list.append(ofp.oxm.in_port(in_port))
+        request = ofp.message.flow_add(
+                table_id=60,
+                cookie=42,
+                match=match,
+                instructions=inst,
+                buffer_id=ofp.OFP_NO_BUFFER,
+                priority=1000)
+        #self.controller.message_send(request)
+
+        logging.info("Sending flow stats request")
+        stats = get_flow_stats(self, match)
+        logging.info("Received %d flow stats entries", len(stats))
+        verify_flow_stats=[ofp.flow_stats_entry(
+                               table_id=60
+                               #cookie=42,
+                               #match=match,
+                               #instructions=inst,
+                               #priority=1000
+)]
+        self.assertEquals(stats, verify_flow_stats)
+