Comment 40 for bug 1003656

Thank you Stéphane, in those log files I found the message:

  device br0 already exists; can't create bridge with the same name
  Failed to bring up br0.

In /etc/network/interfaces below the br0 stance I had just to remove some lines:

  pre-up brctl addbr br0
  pre-up brctl addif br0 eth1
  pre-up brctl addif br0 tap0
  ifconfig br0 192.168.0.2 netmask 255.255.255.0 broadcast 192.168.0.255

These maybe were necessary in 10.04 lucid, when I set up the system first.

So the update of bridge-utils made the config simpler in the end. Great!