echo "NUM_OPENSTACK_SYSTEM=$NUM_OPENSTACK_SYSTEM" >> slave_addresses.txt
echo "NUM_ODL_SYSTEM=$NUM_ODL_SYSTEM" >> slave_addresses.txt
echo "ODL_SYSTEM_IP=$ODL_SYSTEM_IP" >> slave_addresses.txt
echo "NUM_OPENSTACK_SYSTEM=$NUM_OPENSTACK_SYSTEM" >> slave_addresses.txt
echo "NUM_ODL_SYSTEM=$NUM_ODL_SYSTEM" >> slave_addresses.txt
echo "ODL_SYSTEM_IP=$ODL_SYSTEM_IP" >> slave_addresses.txt