Open Stack

Hi,
I have some problems with neutron network. I've configured Openstack 
according to instructions (I hope :) with gre tunnels and everything 
looks fine, like in my similar RDO installation. All vswitch bridges 
look like are connected together, with tunnels and routers. The only 
problem is, that there is no comminication between virtual machines and 
routers in networks :)

I've tried to debug it with pings and tcpdump. It looks like packets are 
droped between br-int and br-tun vswitches, both on compute node and 
neutron. Icmp packets are visible only when I'm listening on br-int 
(pings from vm or qrouter namespace in neutron). I cannot see them by 
listening on br-tun. Patch-tun and patch-int are configured.

Do you have any sugestions, how to debug my problem or where it could 
be? If necessary, I can attach some output and configuration

Regards,
Maciek