Documentation/networking/bridge.txt

   1 In order to use the Ethernet bridging functionality, you'll need the
   2 userspace tools.
   3
   4 Documentation for Linux bridging is on:
   5    http://www.linuxfoundation.org/collaborate/workgroups/networking/bridge
   6
   7 The bridge-utilities are maintained at:
   8    git://git.kernel.org/pub/scm/linux/kernel/git/shemminger/bridge-utils.git
   9
  10 Additionally, the iproute2 utilities can be used to configure
  11 bridge devices.
  12
  13 If you still have questions, don't hesitate to post to the mailing list
  14 (more info https://lists.linux-foundation.org/mailman/listinfo/bridge).
  15