Server ethernet bridging, fail-safe

Question

Is there server hardware available with two ethernet ports, that can turn into a fail-safe bridge when offline?

My use example is a server that does filtering and traffic monitoring on an ethernet bridge interface, but can turn into a straight-through bridge if power is lost.

Answer 1

Here is a gigabit dual ethernet NIC with the ability to be programmatically assigned to fail-open or fail-closed on power loss.