> i'm running OpenStack grizzly with quantum and all stuff. All is running
> fine but i'm trying to get a connection from each fixed_network
> (namespaced) to a physical network.
>
> My problem is to get a connection between a router (namespace) and the
> physical interface.

Did you setup a quantum l3-router?
http://docs.openstack.org/folsom/openstack-network/admin/content/use_cases.html
http://docs.openstack.org/folsom/openstack-network/admin/content/l3_router_and_nat.html


There are some options described to get connectivity, basically use SNAT or 
Floating IP pools to get access.
We are running in a more adventurous mode  ( I have not seen any documentation 
on this but it works) without NAT.
We do this because it is an private cloud and we just want to allow employees 
to access their cloud virtuals without any further configuration.
Our physical router/firewall is setup to forward all traffic for our private 
networks segments (we defined a range for this) to the quantum-l3-router.
The l3-router has an interface in all networks that needs this connectivity.
We setup some Policy Based Routing rules to make everything works and not allow 
traffic between tenants without going through our firewall.
Maybe not the most elegant solution but it works.

Cheers,
Robert van Leeuwen

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