Open Stack

Hello,

I'm getting some problems after installing a small test cloud (one 
controller that acts as network too and two computes).

I'm executing all commands that are in 
http://docs.openstack.org/liberty/install-guide-rdo, but when I run an 
instance, it doesn't receive DHCP IP offer (however, controller+network 
server show at dashboard that an IP address has been assigned to the 
instance that is in creating process)

In my scenario, servers have this configuration:
server: network+controller --> 3 nics --> 1 with public IP (and for 
OpenStack management), 1 with private IP for VM data from OpenStack (GRE 
tunnels) and 1 with no IP for external network (floating IPs)
computes: 2 nics --> 1 with public IP (and for OpenStack management) and 
1 with private IP for VM data from OpenStack (GRE tunnels).

Now, I'm confused because I don't know if "local_ip" in 
/etc/neutron/plugins/ml2/openvswitch_conf.ini must have public IP (from 
mgmt nic) or private IP (from data nic).

What I want to get is that all communitations between hypervisors run in 
eth0 (public IP), like schedulers, conductors, nova... and all 
communitations for the running instances (all traffic from/to br-tun and 
br-int and all openvswitch data and internal communication between 
running instances) run in eth1 (private IP)

I don't know if this scenario could be possible... but I suppose...

My computers NEED to have an eth0 nic with public IP and an eth1 nic 
with private IP, so with that nics, I need to configure my cloud (in 
other words, I can't have a nic with no IP configuration...)

Anybody could help me?

Thanks!