[rhos-list] How can I start br-ex interface across reboots

[yimao]

Hi,all

I have tried Red Hat Enterprise Linux OpenStack
Platform<http://www.redhat.com/products/enterprise-linux/openstack-platform/>,But
IP address on the br-ex interface is not persistent acress reboots.How can
I start br-ex, and is there some auto method for this problem?
When i re-run packstack as :packstack
--answer-file=~/packstack-answers-*.txt, the packstack doesn't run
correctly.

Thanks
yiimao
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