How does neutron manage its iptables config?
I have packstack installed with neutron on a seperate system.
If the neutron system reboots I find that the networking is broken.
I have the feeling the some iptables data is getting lost on reboot.
So are there iptables rules that get setup by neutron dynamically? Are these rules saved to be reapplied on reboot?
Check does br-ex have IP after reboot ? What OS are you running ?
br-ex does seem to come up. I am running Centos7
The problem has not come back after the latest reboot so it gves me an idea.