Network uuid is None

When I create a network, there is no uuid getting generated. Here is an example:

root@openstack1:nova# nova-manage network create private --fixed_range_v4=10.10.1.0/24 --num_networks=1 --network_size=256 --bridge=br100 --bridge_interface=eth0

root@openstack1:nova# nova-manage network list
id IPv4 IPv6 start address DNS1 DNS2 VlanID project uuid
10 10.10.0.0/24 None 10.10.0.2 8.8.4.4 None None None None
11 10.10.1.0/24 None 10.10.1.2 8.8.4.4 None None None None

Since, there is no UUID I can't use the extension 'os-create-server-ext', which requires the network uuid.

Here is my nova.conf:
root@openstack1:nova# cat /etc/nova/nova.conf
--dhcpbridge_flagfile=/etc/nova/nova.conf
--dhcpbridge=/home/openstack/nova-2011.3/bin/nova-dhcpbridge
--logdir=/var/log/nova
--state_path=/var/lib/nova
--lock_path=/var/lock/nova
--verbose
--nodaemon

--s3_host=192.168.1.101
--rabbit_host=192.168.1.101
--cc_host=192.168.1.101
--ec2_url=http://192.168.1.101:8773/services/Cloud

--FAKE_subdomain=ec2
--routing_source_ip=192.168.1.101
--sql_connection=mysql://root:password@192.168.1.101/nova

--glance_host=192.168.1.101
--image_service=nova.image.glance.GlanceImageService
--glance_api_servers=192.168.1.101:9292

--bridge_interface=br100
--fixed_range=10.10.0.0/16
--network_size=8
--network_manager=nova.network.manager.FlatDHCPManager

--iscsi_ip_prefix=192.168.