Package bridge-utils

Utilities for configuring the linux ethernet bridge

http://www.linuxfoundation.org/collaborate/workgroups/networking/bridge

This package contains utilities for configuring the linux ethernet
bridge. The linux ethernet bridge can be used for connecting multiple
ethernet devices together. The connecting is fully transparent: hosts
connected to one ethernet device see hosts connected to the other
ethernet devices directly.

Install bridge-utils if you want to use the linux ethernet bridge.

System Administration (Section 8)
brctl
brctl is used to set up, maintain, and inspect the ethernet bridge configuration in the linux kernel. An ethernet bridge is a device commonly used to connect...