@@ -18,6 +18,17 @@ LibNetwork, which shares plugin infrastructure with Engine. Effectively, network

 driver plugins are activated in the same way as other plugins, and use the same

 kind of protocol.

+## Network driver plugins and swarm mode

+

+Docker 1.12 adds support for cluster management and orchestration called

+[swarm mode](../swarm/index.md). Docker Engine running in swarm mode currently

+only supports the built-in overlay driver for networking. Therefore existing

+networking plugins will not work in swarm mode.

+

+When you run Docker Engine outside of swarm mode, all networking plugins that

+worked in Docker 1.11 will continue to function normally. They do not require

+any modification.

+

 ## Using network driver plugins

 The means of installing and running a network driver plugin depend on the