Comment # 3 on bug 1093146 from Carlos Costa e Silva

Just remembered a few details that may help diagnose the firewall case:

- System has two network cards.
- Only eth0 is connected, eth1 doesn't have a cable connected.
- Install included kvm support, so bridges br0 and br1 where auto created.
- After install, the firewall hadn't the external interface specified and some
yast utilities (DNS server, ...) when instructed to open ports wanted to open
ports in all 4 interfaces (brX, ethX) until I manually specified that br0 is
the external interface.

Just in case this clarifies things.