DHCP not assigning IP

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Hi,

after reading and fighting a lot i can't manage to do this working, so my last chance is someone can help me..

I have configured a controller (Hyper-V VM with CentOs) from zero following the openstack official guides, and the cloudbase HyperVNovaComputeQueens1700 with neutron agent in 2 standalone (no domain) Hyper-V hosts (one of them hosts the controller)

Everything is working OK except the instances are not getting IP address. If I assign the IP manually, I can ping and communicate between controller and instance. In the controller, if i sniff traffic with tcpdump i can see the DHCP request, but not the response. In the logs i see the dnsmasq in the controller assign the IP.

In my neutronhypervagent.conf i have these lines: *

...
[SECURITYGROUP]
firewall_driver=hyperv
enable_security_group=true

but in linuxbridge_agent.ini in the controller i have these:

[securitygroup]
 firewall_driver = neutron.agent.linux.iptables_firewall.IptablesFirewallDriver
enable_security_group= true

is this config correct?

what else could i do for troubleshooting the problem?