If a container is configured with the internal DNS resolver's own
address as an external server, try the next ext server rather than
recursing (return SERVFAIL if there are no other servers).
Signed-off-by: Rob Murray <rob.murray@docker.com>
Libnetwork provides a native Go implementation for connecting containers
The goal of libnetwork is to deliver a robust Container Network Model that provides a consistent programming interface and the required network abstractions for applications.
There are many networking solutions available to suit a broad range of use-cases. libnetwork uses a driver / plugin model to support all of these solutions while abstracting the complexity of the driver implementations by exposing a simple and consistent Network Model to users.