>> AttributeError: 'NoneType' object has no attribute 'refresh_firewall' That errors is mostly harmless. >> While booting instance log shows “sending discover...” This looks like DHCP server is not working. Did you enable DHCP in your subnet? Is neutron-dhcp-agent running on neutron node? Do you see dnsmasq process on neutron node? Thanks, Yuanle -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack-operators/attachments/20140117/77f5af1b/attachment.html>