diff --git a/ofdpa/bugs.py b/ofdpa/bugs.py
new file mode 100644
index 0000000..02dff65
--- /dev/null
+++ b/ofdpa/bugs.py
@@ -0,0 +1,139 @@
+"""
+The following tests are being done here
+1) PacketInSrcMacMiss
+2) VlanSupport
+3) L2FloodQinQ
+4) L2FloodTagged
+5) L2Flood Tagged Unknown Src
+6) L2 Unicast Tagged
+7) MTU 1500
+8) MTU 4100
+9) MTU 4500
+10) L3UnicastTagged
+11) L3VPNMPLS
+12) MPLS Termination
+"""
+
+from oftest import config
+import logging
+import oftest.base_tests as base_tests
+import ofp
+from oftest.testutils import *
+from accton_util import *
+
+class Mtu4500(base_tests.SimpleDataPlane):
+
+    def runTest(self):
+        ports = sorted(config["port_map"].keys())
+
+        delete_all_flows(self.controller)
+        delete_all_groups(self.controller)
+
+        for port in ports:
+            add_one_l2_interface_group(self.controller, port, 1, True, False)
+            add_one_vlan_table_flow(self.controller, port, 1, flag=VLAN_TABLE_FLAG_ONLY_TAG)
+            group_id = encode_l2_interface_group_id(1, port)
+            add_bridge_flow(self.controller, [0x00, 0x12, 0x34, 0x56, 0x78, port], 1, group_id, True)
+        do_barrier(self.controller)
+
+        for out_port in ports:
+            # change dest based on port number
+            mac_dst= '00:12:34:56:78:%02X' % out_port
+            for in_port in ports:
+                if in_port == out_port:
+                    continue
+                # change source based on port number to avoid packet-ins from learning
+                mac_src= '00:12:34:56:78:%02X' % in_port
+                parsed_pkt = simple_tcp_packet(pktlen=4500,dl_vlan_enable=True, vlan_vid=1, eth_dst=mac_dst, eth_src=mac_src)
+                pkt = str(parsed_pkt)
+                self.dataplane.send(in_port, pkt)
+
+                for ofport in ports:
+                    if ofport in [out_port]:
+                        verify_packet(self, pkt, ofport)
+                    else:
+                        verify_no_packet(self, pkt, ofport)
+
+                verify_no_other_packets(self)
+
+class L3McastToVPN(base_tests.SimpleDataPlane):
+    """
+    Mcast routing
+    """
+    def runTest(self):
+        """
+        port1 (vlan 1)-> port 2 (vlan 2)
+        """
+        #delete_all_flows(self.controller)
+        #delete_all_groups(self.controller)
+
+        if len(config["port_map"]) <3:
+            logging.info("Port count less than 2, can't run this case")
+            return
+
+        vlan_id =1
+        port2_out_vlan=2
+        port3_out_vlan=3
+        in_vlan=1 #macast group vid shall use input vlan diffe from l3 interface use output vlan
+        intf_src_mac=[0x00, 0x00, 0x00, 0xcc, 0xcc, 0xcc]
+        intf_src_mac_str=':'.join(['%02X' % x for x in intf_src_mac])
+        dst_mac=[0x01, 0x00, 0x5e, 0x01, 0x01, 0x01]
+        dst_mac_str=':'.join(['%02X' % x for x in dst_mac])
+        port1_mac=[0x00, 0x11, 0x11, 0x11, 0x11, 0x11]
+        port1_mac_str=':'.join(['%02X' % x for x in port1_mac])
+        src_ip=0xc0a80101
+        src_ip_str="192.168.1.1"
+        dst_ip=0xe0010101
+        dst_ip_str="224.1.1.1"
+
+        port1=config["port_map"].keys()[0]
+        port2=config["port_map"].keys()[1]
+        port3=config["port_map"].keys()[2]
+
+        #add l2 interface group
+        for port in config["port_map"].keys():
+            add_one_l2_interface_group(self.controller, port, vlan_id=vlan_id, is_tagged=False, send_barrier=False)
+            #add vlan flow table
+            add_one_vlan_table_flow(self.controller, port, vlan_id, flag=VLAN_TABLE_FLAG_ONLY_TAG)
+            vlan_id +=1
+
+        #add termination flow
+        add_termination_flow(self.controller, port1, 0x0800, [0x01, 0x00, 0x5e, 0x00, 0x00, 0x00], vlan_id)
+
+        #add MPLS interface group
+        l2_gid = encode_l2_interface_group_id(port2_out_vlan, port2)
+        mpls_gid2, mpls_msg = add_mpls_intf_group(self.controller, l2_gid, dst_mac, intf_src_mac, port2_out_vlan, port2)
+        l2_gid3 = encode_l2_interface_group_id(port3_out_vlan, port3)
+        mpls_gid3, mpls_msg = add_mpls_intf_group(self.controller, l2_gid3, dst_mac, intf_src_mac, port3_out_vlan, port3)
+        #add L3VPN groups
+        mpls_label_gid2, mpls_label_msg = add_mpls_label_group(self.controller, subtype=OFDPA_MPLS_GROUP_SUBTYPE_L3_VPN_LABEL,
+                     index=(0x20000+port2), ref_gid= mpls_gid2, push_mpls_header=True, set_mpls_label=port2, set_bos=1, cpy_ttl_outward=True)
+        mpls_label_gid3, mpls_label_msg = add_mpls_label_group(self.controller, subtype=OFDPA_MPLS_GROUP_SUBTYPE_L3_VPN_LABEL,
+                     index=(0x10000+port3), ref_gid= mpls_gid3, push_mpls_header=True, set_mpls_label=port3, set_bos=1, cpy_ttl_outward=True)
+
+
+
+        mcat_group_msg=add_l3_mcast_group(self.controller, in_vlan,  2, [0x92020022 , 0x92010023])
+        add_mcast4_routing_flow(self.controller, in_vlan, src_ip, 0, dst_ip, mcat_group_msg.group_id)
+
+        parsed_pkt = simple_tcp_packet(pktlen=100, dl_vlan_enable=True, vlan_vid=1,
+                                       eth_dst=dst_mac_str,
+                                       eth_src=port1_mac_str,
+                                       ip_ttl=64,
+                                       ip_src=src_ip_str,
+                                       ip_dst=dst_ip_str)
+        pkt=str(parsed_pkt)
+        self.dataplane.send(port1, pkt)
+        label = (in_vlan, 0, 1, 63)
+        parsed_pkt = mpls_packet(pktlen=100,
+                                       eth_dst=dst_mac_str,
+                                       eth_src=intf_src_mac_str,
+                                       ip_ttl=63,
+                                       ip_src=src_ip_str, label= [label],
+                                       ip_dst=dst_ip_str)
+        pkt=str(parsed_pkt)
+        verify_packet(self, pkt, port2)
+        verify_packet(self, pkt, port3)
+        verify_no_other_packets(self)
+
+