Bridging LXC containers to host eth0 so they can have a public IP

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http://serverfault.com – I need to bridge LXC containers to the physical interface (eth0) of my host, reading numerous tutorials, documents and blog posts on the subject, including http://wiki.debian.org/LXC/SimpleBridge http://sourceforge.net/search/?group_id=163076&type_of_search=mlists and many others... I need the containers to have their own public IP (which I've previously done KVM/libvirt). After two days of searching and trying, I still can't make it work with LXC containers. The host runs a freshly installed Ubuntu Server Quantal (12.10) with only libvirt (which I'm not using here) and lxc installed (HowTos)