owner: root:root
  - content: |
      TYPE="Ethernet"
-     BOOTPROTO=static
+     BOOTPROTO="dhcp"
+     DEFROUTE="no"
+     PEERDNS="no"
+     PEERROUTES="no"
+     IPV4_FAILURE_FATAL="no"
      IPV6INIT=yes
      IPV6ADDR="2001:db8:0:2::1/64"
      NAME=eth1
    permissions: '0755'
    owner: root:root
  - content: |
+     interface eth0
+     {
+        AdvSendAdvert on;
+        MinRtrAdvInterval 3;
+        MaxRtrAdvInterval 10;
+        AdvDefaultLifetime 0;
+        route 2001:db8:0:2::/64 {
+        };
+     };
      interface eth1
      {
         AdvSendAdvert on;
      IPV6FORWARDING=yes
    path: /etc/sysconfig/network
    permissions: '0644'
-   owner: root:root
\ No newline at end of file
+   owner: root:root
 
 # which accompanies this distribution, and is available at
 # http://www.apache.org/licenses/LICENSE-2.0
 ##############################################################################
-sed -i 's/enable_security_group= False/enable_security_group = True/g' /etc/neutron/plugins/ml2/ml2_conf.ini
-sed -i 3d /etc/neutron/plugins/ml2/ml2_conf.ini
-sed -i 's/firewall_driver= neutron.agent.firewall.NoopFirewallDriver/firewall_driver = neutron.agent.linux.iptables_firewall.OVSHybridIptablesFirewallDriver/g' /etc/neutron/plugins/ml2/ml2_conf.ini
-sed -i 's/security_group_api= nova/security_group_api = neutron/g' /etc/nova/nova.conf
+cp /etc/neutron/plugins/ml2/ml2_conf.ini_bkp /etc/neutron/plugins/ml2/ml2_conf.ini
 
 service neutron-l3-agent restart
 service neutron-dhcp-agent restart
 service nova-consoleauth restart
 service nova-novncproxy restart
 service nova-scheduler restart
-service nova-compute restart
\ No newline at end of file
+service nova-compute restart
 
 # http://www.apache.org/licenses/LICENSE-2.0
 ##############################################################################
 
-sed -i 's/enable_security_group = True/enable_security_group= False/g' /etc/neutron/plugins/ml2/ml2_conf.ini
-sed -i '2a extension_drivers = port_security' /etc/neutron/plugins/ml2/ml2_conf.ini
+cp /etc/neutron/plugins/ml2/ml2_conf.ini /etc/neutron/plugins/ml2/ml2_conf.ini_bkp
+sed -i '83a prevent_arp_spoofing = False' /etc/neutron/plugins/ml2/ml2_conf.ini
 sed -i 's/firewall_driver = neutron.agent.linux.iptables_firewall.OVSHybridIptablesFirewallDriver/firewall_driver= neutron.agent.firewall.NoopFirewallDriver/g' /etc/neutron/plugins/ml2/ml2_conf.ini
-sed -i 's/security_group_api = neutron/security_group_api= nova/g' /etc/nova/nova.conf
-
 
+# restart nova and neutron service
 service neutron-l3-agent restart
 service neutron-dhcp-agent restart
 service neutron-metadata-agent restart
 
 
 
 # create (ipv4,ipv6)router and net and subnet
-neutron net-create --port_security_enabled=False ipv4-int-network1
-neutron net-create --port_security_enabled=False ipv6-int-network2
+neutron net-create ipv4-int-network1
+neutron net-create ipv6-int-network2
 
 # Create IPv4 subnet and associate it to ipv4-router
 neutron subnet-create --name ipv4-int-subnet1 \