OpenStack Juno installed as per RDO onto a CentOS 7.0 Host. (NetworkManager disabled, network service enabled.)

Interface br-ex is not assigned any address (automatically) at boot of OpenStack host:

[root@CentOS7Host02 ~]# ifconfig br-ex
br-ex: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet6 fe80::847e:5dff:feae:814c  prefixlen 64  scopeid 0x20<link>
        ether 86:7e:5d:ae:81:4c  txqueuelen 0  (Ethernet)
        RX packets 23  bytes 1854 (1.8 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 10  bytes 828 (828.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

Here is its configuration:

[root@CentOS7Host02 ~]# cat /etc/sysconfig/network-scripts/ifcfg-br-ex
DEVICE=br-ex
DEVICETYPE=ovs
TYPE=OVSBridge
BOOTPROTO=static
IPADDR=172.24.4.225_br_ex
NETMASK=255.255.255.240_br_ex
ONBOOT=yes

Should this not be assigning the address 172.24.4.225 automatically at boot?

Note that if I manually configure the address (i.e. via ifconfig from the command line) then all works well.