Docker plugin architecture is more fundamental to the platform and there has been significant community interest in that.
Work is underway to enable such a plugin architecture and Networking will be part of that.
From a networking standpoint, there has been a significant interest and discussion around
https://github.com/docker/docker/issues/9983.
We are working on enhancing this proposal based on community feedback and use-cases.
This proposal, in combination with the Plugin architecture will provide a powerful way to extend Docker's Networking functionality.
This will enable the community to develop rich set of plugins to address various use-cases.
Pls look for updates to #9983 in the next few days.
-Madhu