I noticed that the bridge-group command is unavailable for tunnel interfaces on a cisco 3640 router. Is there any way to build a bridge over a cisco tunnel interface? It has to be lan bridge because its going to be a backup connection for a DR site and needs to look like another extension of the lan. The tunnel is ipsec vpn and is going across a cable internet connection. If not, maybe someone could point me in the right direction as to what other options I could pursue.