+Q: What happened to the bridge compatibility feature?
+
+A: Bridge compatibility was a feature of Open vSwitch 1.9 and earlier.
+ When it was enabled, Open vSwitch imitated the interface of the
+ Linux kernel "bridge" module. This allowed users to drop Open
+ vSwitch into environments designed to use the Linux kernel bridge
+ module without adapting the environment to use Open vSwitch.
+
+ Open vSwitch 1.10 and later do not support bridge compatibility.
+ The feature was dropped because version 1.10 adopted a new internal
+ architecture that made bridge compatibility difficult to maintain.
+ Now that many environments use OVS directly, it would be rarely
+ useful in any case.
+
+ To use bridge compatibility, install OVS 1.9 or earlier, including
+ the accompanying kernel modules (both the main and bridge
+ compatibility modules), following the instructions that come with
+ the release. Be sure to start the ovs-brcompatd daemon.
+