Not sure if this is the perfect solution, but I had the exact same problem. But I got my bridged network to work as follows:
Before hand I did: - Installed a fresh copy of Ubuntu 11.10 - Installed the latest version of bridge-utils (1.5-2ubuntu1.1) - modified /etc/network/interfaces with bridged network settings - Rebooted but could not get a network connection. Than I just - Removed bridge-utils 1.5-2ubuntu1.1 - reset /etc/network/interfaces back to its default - Manually installed bridge-utils 1.5-2ubuntu1 from the website UbuntuUpdates.org - recreated the bridge network settings in /etc/network/interfaces - Rebooted and this time it worked perfectly and I could go on the net. So long story short bridge-utils 1.5-2ubuntu1.1 has a bug that bridge- utils 1.5-2ubuntu1 does not, BUT I am sure everyone knows that already.... :) -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to bridge-utils in Ubuntu. https://bugs.launchpad.net/bugs/919068 Title: bridge_ports all doesn't work at boot time To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bridge-utils/+bug/919068/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs