yes I yhink its that I want a router. But not a firewall. I just want to forward packets form an interface to the other but I want that the interfaces have both an IP.
So get rid of the bridge configuration and just turn on packet forwarding instead.
In /etc/sysctl.conf: net.ipv4.ip_forward = 1
Note: this will not do Network Address Translation (IP Masquerading). Firewalls are good for that. Really.
Paul.