Prateek Gogia ad8a052dd3 pkg/ip: Return correct error if container name provided exists, and test cases
If interface name for a container provided by a user is already present,
Veth creation fails with incorrect error.
If os.IsExist error is returned by makeVethPair:
* Check for peer name, if exists generate another random peer name,
* else, IsExist error is due to container interface present, return error.

Fixes #155
2016-08-11 18:51:03 +00:00
..